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188 Sentences With "germinates"

How to use germinates in a sentence? Find typical usage patterns (collocations)/phrases/context for "germinates" and check conjugation/comparative form for "germinates". Mastering all the usages of "germinates" from sentence examples published by news publications.

Even now, the evil seed of what you've done germinates within you.
He seeds his reader's imagination, and his outlandish fantasia germinates many varieties of interpretation.
Years later, within the refrigerated walls of their studio, a collection of beautiful, living artworks germinates.
For instance, before a seed germinates it is most vulnerable and often can rot in the soil.
Malting simply means soaking the barley until it germinates, which releases enzymes that convert starches to fermentable sugars.
Scientists won't know which species made it until the first rains come and they can watch what germinates.
But as the seed germinates, as a seedling develops, it proves to the individual that their actions made a difference.
"This (type) germinates in distorted minds and presents itself when the devil inspires wicked intentions, often in lambs' clothing," he said.
Then a guy like Stephen Thompson has to keep turning the barley over using a shovel or a mechanical malt turner to make sure it germinates evenly.
Companies like Google, Yahoo, Oracle and PayPal attract top talent for years; when they reach maturity or a major liquidity event, their talent disperses and germinates into the next generation of companies.
Ineos is expected to be a major part of any shale gas industry that potentially germinates in the U.K. Other critics highlight the rigorous public relations push that Ineos has undergone this week.
The house also has three walled gardens, where Sido, Colette's mother, shared her delight in everything that "germinates, blossoms or flies," as the writer put it, and by doing so, trained her youngest child's acute powers of observation.
Everything. A forest fire cuts the adventurers off from their canoes, a doomed love triangle germinates within the co-ed group, and their two-way radio stops broadcasting but keeps picking up breathless pep talks and exaltations from their comrades back in civilization.
In Rank Your Records, we talk to members of bands who have amassed substantial discographies over the years and ask them to rate their releases in order of personal preference Lifetime is the seed from which much of the late 90s and early 2000s melodic hardcore and pop punk germinates from.
Having spent the past few years embedding as a reporter with the trolls and bigots and propagandists who are experts at converting fanatical memes into national policy, I no longer have any doubt that the brutality that germinates on the internet can leap into the world of flesh and blood.
"Having spent the past few years embedding as a reporter with the trolls and bigots and propagandists who are experts at converting fanatical memes into national policy, I no longer have any doubt that the brutality that germinates on the internet can leap into the world of flesh and blood," he wrote.
The plant is easily propagated from seed which germinates readily.
The stone is woody and contains one seed. Seedling germinates epigeally.
The plant is a summer annual and germinates from early summer to early fall, requiring warm soil and light.
It can also be propagated by division or by seed growing. Iris spuria subsp. musulmanica usually germinates within 30–545 days.
It is easily grown from fresh seed which usually germinates in 3–6 weeks and seed is suitable for direct seeding.
Within the macrocyst the diploid zygote undergoes meiosis followed by successive mitotic divisions. When the macrocyst germinates it releases many haploid amoeboid cells.
Because the seed germinates later than that of desirable competitors, preemergence herbicide sprays may be useful as a means of eliminating the plants.
When forests are felled, isolated trees are often left standing and the tree regenerates easily. Fresh seed germinates readily but it loses viability in storage.
A form known as 'Silver Princess' is described as a "graceful weeping tree" that has a regular and weeping form. Propagation is from seed, which germinates readily.
The florets are minute. Like many daisies, it has seeds which are gradually dispersed on the wind. The seed germinates readily, but has a short viable life.
The seed typically germinates within about 10 days. Although it is possible to grow perfoliate pondweed in fish ponds, it would be vulnerable to fish predation initially, so should be protected during establishment.
Rarely do they remain viable until the second spring. Germination is hypogeal. Sometimes nearly 80 percent of the seed crop germinates. As a result, thickets and clumps of water hickory are not unusual.
The town celebrates Anmugar Amadal N Zafran, Le Festival International de Safran every year in winter (usually November), the season in which the saffron flower germinates. the value of Talaouine saffron is recognized worldwide.
Macrozamia riedlei has horticultural potential as a large container plant or specimen plant. It grows in well-drained soil and is sensitive to fungal attack. Large specimens can be transplanted. Seed germinates in 12 to 18 months.
Bell-fruited mallee can be cultivated in temperate areas of Australia but performs poorly in tropical environments. It is propagated from seeds and germinates easily. It prefers a position in full sun and in well-drained soils.
Fresh seed germinates readily, and cuttings taken from semi-hardwood in late spring or autumn are usually successful. Visitors to South Africa can see the plant in cultivation by driving the beautiful coastal road from Gordon's Bay to Hermanus.
The Sacred Lotus grows in water up to deep. The minimum water depth is about . In colder climates, such a low water level, which heats up more quickly, is helpful for better growth and flowering. Lotus germinates at temperatures above .
Kali tragus is an unusually large species of tumbleweed. This specimen – though still green – is above average, but not exceptional. Kali tragus is a ruderal annual forb. It germinates rapidly even in very small amounts of moisture in arid conditions.
However, the bur, with its hooked projections, is obviously adapted to dispersal via mammals by becoming entangled in their hair. Once dispersed and deposited on the ground, typically one of the seeds germinates and the plants grows out of the bur.
It requires a well-drained moist soil in a sheltered site. These plans are very susceptible to drought but can grow even in -7 °C. The seeds should be surface sown in ericaceous soil. It germinates within 1–2 months at 18 °C.
Dypsis decaryi does not transplant well, so it is a bad choice for commercial field growing. However, it is a fast grower once established, and its seed normally germinates within a month of being planted, so propagation by seed is a good option.
Moyeam germinates in the spring and fades in the autumn. There is no significant difference between its primary and secondary roots. Stems and leaves are glabrous, and stem diameter is about . The largest annual production is in early summer, followed by autumn.
Whereas in many group pf organisms especially in plants (observable in lower plants but vestigeal stage in higher plants), the meiosis gives rise to kind of spores that germinates into haploid vegitative phase (gametophyte). Such kind of meiosis is called sporic meiosis.
The tree is fibrous and copes well in arid conditions. It germinates prolifically after fire forming dense thickets of trees which are about in height. These thickets thin out over the following decades, and trees my attain a height of 25 metres.
Adenophora triphylla grows wild in mountains and meadows, but is also cultivated. The seed can be sown in spring and germinates in 1–3 months. At that time, it needs a temperature of about . It can be planted out into a permanent positions while young.
The plant is sold commercially in seed form and, like most Eucalypts, germinates easily. It prefers a full position and will tolerate light frost and drought once established. It is grown in gardens as a shade tree or as an informal screen or windbreak.
Soak the seeds for 2–3 hours in warm water before sowing it from early spring to early summer in a warm greenhouse or pot in your own home. The seed usually germinates in 1–12 weeks at 23°C. Cassia tora can be transplanted.
Botryosphaeria ribis germinates at its greatest rate when the temperature is 25–30 °C. At 5 °C growth was unnoticeable or absent, and the pathogen lost all viability at temperatures above 45 °C.Maramba, P. and G.C. Clerk, 1974. Survival of conidia of trachysphaera-fructigena.
E. camaldulensis readily germinates from both fresh seed and seed stored in cool dry conditions. It quickly toughens up and can withstand drought even whilst in forestry tubes. It makes an excellent bonsai and will readily regrow both from the base and from epicormic buds.
This plant is a widely cultivated, popular garden plant, and has been available within Australia and internationally for at least 100 years (with seeds being available in Jamaica as early as 1887). Within Australia, in the temperate regions of Victoria, South Australia and Tasmania it has become a serious environmental weed. It produces an abundance of seed, which readily germinates after fire or disturbance, and is thought also to spread by native animals eating the seed, which not only takes the plant to new sites, but the seed germinates more readily after ingestion. This plant gained the Royal Horticultural Society's Award of Garden Merit in 2013.
It has a moderate growth rate and grows well in full sun. It is sold commercially in seed form or as tube stock and is used for ornamental plantings, honey production, products rich in tannin and as a screening plant. It germinates easily and is drought resistant.
Propagation is from seed, which readily germinates after boiling water treatment, or from cuttings. This plant has a symbiotic relationship with nitrogen fixing bacteria, which helps improve nitrogen levels in the soil. This nitrogen is used by the Green birdflower and other plants in the vicinity.
Reproduction occurs through seeds and sprouts. The seed is produced and dispersed during summer, it usually germinates in the following spring. Dispersal happens through a variety of birds and mammals. The sprouts represent the vegetative reproduction; they usually grow from the roots or the root crown.
In temperate regions this plant is either grown under glass or outdoors with the winter protection of a mulch. The species germinates readily from seed. As plants generally deteriorate after the second season, they are best treated as biennial. Watering should be withheld during the dormant period.
Like other members of the class Bryopsida, gametophytes start as a haploid spore which quickly germinates to become a uniseriate protonema. This protonema serves members of Splachnaceae by quickly colonizing its preferred substrate, developing in three stages; which are the chloronema, caulonema, and finally the leafy gametophyte.
Sporobolus airoides is a facultative halophyte, able to grow in soils with high salt concentrations.US Forest Service Fire Ecology This grass germinates best in warm, sunny, wet conditions, and it can easily move into saline soils such as those in alkali flats when the substrate is wet.
Plants germinates during early spring (March to early May), and usually grow for 2–3 years as vegetative rosettes. Much mortality occurs at this stage due to summer drought. Surviving individuals flower during their second year. Erysimum baeticum bastetanum is monocarpic, most individuals dying after flowering.
The spores of rust fungi may be dispersed by wind, water or insect vectors.Craigie, J.H. (1931). Phytopathology, 21,1001 When a spore encounters a susceptible plant, it can germinate and infect plant tissues. A rust spores typically germinates on a plant surface, growing a short hypha called a germ tube.
This banksia has only rarely been grown in cultivation. It is fast growing and flowers from seed after about five years. A Mediterranean climate is preferred and the species is difficult to maintain in eastern Australia. It is grown from seed which germinates after between 28 and 39 days.
The plant is sold commercially as tube stock or seeds. It germinates readily as is used as an ornamental species or in land restoration. It is a slow grower and is salt and drought tolerant. It grows well in a full sunny position and has low maintenance requirements.
The berry is white or pale green up to 6 cm in diameter, maturing around Easter time. The fruit is not pleasant to eat raw, but is an excellent ingredient in mixed preserves. The large seed germinates well after many months. Most seedlings appear in November and December.
By contrast, species of the family Dendrocerotaceae may begin dividing within the spore, becoming multicellular and even photosynthetic before the spore germinates. In either case, the protonema is a transitory stage in the life of a hornwort. Life cycle of a typical hornwort Phaeoceros. Click on the image to enlarge.
Prosthanthera aspalthioides is best adapted to cultivation in dry conditions with low humidity. Plants prefer a position in full sun or partial shade with good drainage and withstand moderate frost. Cuttings are the preferred propagation method, as seed germinates slowly. Plants may also be grafted on roostocks of the hardier species Prostanthera nivea.
The gametangium develops into a zygospore, a thick-walled spore formed by the union of gametes. When the zygospore germinates, it undergoes meiosis, generating new haploid hyphae, which may then form asexual sporangiospores. These sporangiospores allow the fungus to rapidly disperse and germinate into new genetically identical haploid fungal mycelia.Deacon, pp. 21–24.
When a pollen grain adheres to the stigma of a carpel it germinates, developing a pollen tube that grows through the tissues of the style, entering the ovule through the micropyle. When the tube reaches the egg sac, two sperm cells pass through it into the female gametophyte and fertilisation takes place.
Giant strangler figs such as the Curtain Fig Tree were considered to be wonders (or even freaks) of nature. Strangler figs are a parasitic species of tree that develop when the seed of a fig germinates on the top of another tree and then tries to plant its roots in the ground.
The plant germinates in winter or early spring. The blooming time is lengthy, and after maturity the plant forms a tumbleweed. Common names of the plant include Jim Hill mustard, after James J. Hill, a Canadian-American railroad magnate, tall tumblemustard, tall mustard, tumble mustard, tumbleweed mustard, tall sisymbrium, and tall hedge mustard.
The fruit matures from February to May, though occasionally at other times of the year. It is a brown roundish capsule 12 to 18 mm long. Inside are three cells, with a single mottled brown seed inside, 8 mm long, although many capsules contain no seeds. Fresh seed germinates reliably, and cuttings strike well.
In January to May, white fragrant flowers form on cymes. The red berry is up to 4 cm in diameter, maturing around August to November. The single large seed germinates well within two months. It is advised to remove the flesh from the seed, and soak for a day or two, to drown insect larvae.
R. allomycis zoospores are chemotaxically attached to Allomyces. Once in contact, the zoospore encysts and germinates. The host cell wall is penetrated with an infection tube, and the contents of the zoospore are injected into the host. The infection tube causes an invagination of the host cell membrane, which then envelopes the R. allomycis protoplast.
Davis, K. Renner, C. Sprague, L. Dyer, D. Mutch (2005). Integrated Weed Management. MSU Velvetleaf is controllable by herbicides even though it is known to be a major weed to different crops due to its harmful effects. Because of the season it germinates in, the plant matures right before the fall harvest in farms.
This tree germinates readily from seeds which are spread by birds, springs up in gaps in the canopy and outperforms native tree seedlings, displacing rare endemics and reducing biodiversity. The forests of East Usambara have long been separated from other forests and their isolation makes them more vulnerable to invasive species such as M. eminii.
Carnivorous plant growers consider D. spatulata to be a weed because it is very hardy and produces copious amounts of seed when it flowers. The seed also germinates without much difficulty, causing little plants to pop up in surrounding pots. Many "D. spatulata" distributed in cultivation are mislabeled and are often actually D. tokaiensis.
The seed does not detach itself from the flower stalk but germinates where it is and is known as a propagule. It grows into a slightly curved cylinder up to long, with the upturned calyx still attached, and looks rather like a slender, dangling cucumber.Bakau Putih Mangrove and wetland wildlife at Sungei Buloh Nature Park. Retrieved 2012-02-07.
The breeding of the southern hairy-nosed wombat occurs when their favoured food is at its peak growth rates. Their reproduction relies on the winter rainfall, which germinates the grasses. Between August and October, when rainfall is sufficient, females enter ovulation and the males' testosterone levels and prostate gland sizes increase. In years of low rainfall, neither occurs.
The fruit has scales, similar to a pineapple, but whose color varies from green to golden yellow to dark brown to grey. Like other species of Metroxylon, M. vitiense propagates by seed, which germinates from its fruit. The palm is monocarpic and dies after it flowers and sets seeds, similar to the century plant and the Hawaiian silversword.
Orobanche reticulata was described by taxonomist Karl Friedrich Wilhelm Wallroth (Wallr.) in 1825. Its usual host plant is creeping thistle. It is a herbaceous and self-supporting plant with simple broad, scale-like leaves, normally growing up to , and it flowers between May and July. It is a tuberous perennial, a hermaphrodite plant which possibly germinates in the spring.
Each spore type is very host specific, and can typically infect only one kind of plant. Rust fungi are obligate plant pathogens that only infect living plants. Infections begin when a spore lands on the plant surface, germinates, and invades its host. Infection is limited to plant parts such as leaves, petioles, tender shoots, stem, fruits, etc.
It is tolerant to frost, but not to aridity or possibly more humid conditions. The species prefers a sunny aspect and fair drainage. It has been grown in inland New South Wales on the Southern Tablelands and Rylstone. Banksia canei seed requires stratification—storing at for 60 days—before it germinates, which takes a further 6 to 25 days.
Control of weeds by pre-plant irrigation that germinates weed seeds followed by shallow tillage may be effective on fields with minimal weed pressure. Psyllium is a poor competitor with most weed species. Plantago wilt (Fusarium oxysporum) and downy mildew (Peronospora alta) are the major diseases of Isabgol. White grubs and aphids are the major insect pests.
Foxtail barley is a prolific seed producer, with each plant capable of producing upwards of 200 seeds. Seeds are elliptical, yellowish- brown and about a long with four to eight awns. The seeds have sharp, backwards pointing barbs. Seed is dispersed by wind, machinery and animals and germinates in the cooler temperatures of the spring or fall.
The pollen is carried to the pistil of another flower, by wind or animal pollinators, and deposited on the stigma. As the pollen grain germinates, the tube cell produces the pollen tube, which elongates and extends down the long style of the carpel and into the ovary, where its sperm cells are released in the megagametophyte. Double fertilization proceeds from here.
CRC Weed Management (2003) Weed Management Guide Parkinsonia (Parkinsonia aculeata) Fact Sheet . Wetlands are particularly vulnerable because parkinsonia can invade watercourses, cause erosion, lower watertables and take over vast tracts of floodplain. At Lake Galilee it germinates freely on the moist edges of the lake. Parthenium is an annual herb with a deep taproot and an erect stem that becomes woody with age.
This species is used as a cooling herbal remedy, and grown as a vegetable crop and ground cover for both human and poultry consumption. It is sometimes called common chickweed to distinguish it from other plants called chickweed. Other common names include chickenwort, craches, maruns, and winterweed. The plant germinates in autumn or late winter, then forms large mats of foliage.
Amoebophilus species have been reported from forest and agricultural soils and freshwater ponds where they infect free living amoeba. Infection begins when a conidium comes in contact with an amoeba. The conidium produces a penetration tube to invade the host and form the haustorium. Once the haustorium is formed, the conidium germinates and gives rise to a chain of conidia.
They repeatedly infect this host over the growing season. At the end of the season, a fourth spore type, the teliospore, is formed. It is thicker-walled and serves to overwinter or to survive other harsh conditions. It does not continue the infection process, rather it remains dormant for a period and then germinates to form basidia (stage "IV"), sometimes called a promycelium.
It has a reputation of rarely being attacked by insect pests, but may be susceptible to powdery mildew. V. bonariensis is commonly grown from seed which germinates readily without pre- treatment, but can also be propagated from herbaceous stem cuttings. It has gained the Royal Horticultural Society's Award of Garden Merit. The Verbena bonariensis grows fast throughout the garden and can become invasive.
Some of the main streets of early Sydney were paved with blocks of Karri but have been long since covered by asphalt. The wood was also sent to London for the same purpose. The species is commercially available and sold in seed form. It germinates readily and prefers a protected sunny position, but is known to be both drought- and frost-sensitive.
The vitality and regeneration of this Pinus ponderosa forest depends on ample seeds, adequate moisture, and a temperature of for germination and early survival. Once the seed germinates, it grows a tap root into the ground. This tree likes uneven aged stands and is shade intolerant. Management practices for the forest include group selection cutting and prescribed controlled burn fires.
Recent improvements to drills allow seed-drilling without prior tilling. This means that soils subject to erosion or moisture loss are protected until the seed germinates and grows enough to keep the soil in place. This also helps prevent soil loss by avoiding erosion after tilling. The development of the press drill was one of the major innovations in pre-1900 farming technology.
Although sexual reproduction in fungi varies between phyla, for some fungi the sporangium plays an indirect role in sexual reproduction. For Zygomycota, sexual reproduction occurs when the haploid hyphae from two individuals join to form a zygosporangium in response to unfavorable conditions. The haploid nuclei within the zygosporangium then fuse into diploid nuclei.When conditions improve the zygosporangium germinates, undergoes meiosis and produces a sporangium, which releases spores.
Pennycress is planted and germinates in the fall and overwinters as a small rosette. The central stem and upper side stems terminate in erect racemes of small white flowers. Flowers are self-pollinated and produce a penny sized, heart-shaped, flat seed pod with up to 14 seeds. Each dark brown seed is oval-shaped and slightly larger than a camelina seed (Camelina sativa).
In Bryophyte land plants, fertilisation takes place within the archegonium. In flowering plants a second fertilisation event involves another sperm cell and the central cell which is a second female gamete. In flowering plants there are two sperm from each pollen grain. In seed plants, after pollination, a pollen grain germinates, and a pollen tube grows and penetrates the ovule through a tiny pore called a micropyle.
The plant is available commercially in seed form or as seedlings, it germinates readily from seed. It prefers sandy well drained soils and a full sun position. It is drought tolerant once established but will be damaged by frost. The tree flowers from its second year and then flowers over an extended period with many different types of birds and insects being attracted to the flowers.
After the follicle is split, the seed and separator are exposed to the elements. The wings of the woody separator are hygroscopic, and move together when wet, and spread and curl apart when dry. The seed is gradually drawn out by the movement with each wetting. Once released, seed germinates at temperatures between to optimise timing with autumn and winter rains and hence maximise chance of survival.
The most important microscopic feature for identification of mushrooms is the spores. Their color, shape, size, attachment, ornamentation, and reaction to chemical tests often can be the crux of an identification. A spore often has a protrusion at one end, called an apiculus, which is the point of attachment to the basidium, termed the apical germ pore, from which the hypha emerges when the spore germinates.
Newly germinated radishes at 10 days old Radishes are a fast-growing, annual, cool-season crop. The seed germinates in three to four days in moist conditions with soil temperatures between . Best quality roots are obtained under moderate day lengths with air temperatures in the range . Under average conditions, the crop matures in 3–4 weeks, but in colder weather, 6–7 weeks may be required.
Within her academic pursuits, Eillam has worked to introduce feminism to the institutions, acquainting students and professors alike with the discipline. However, she is critical of the "academization" of feminist discourse, which according to her analysis appropriates feminism from the field, and contributes to the silencing of women who are members of marginal groups whose voices are less heard, though their activism is usually where feminism germinates.
A rather different example is Porphyra gardneri: In its diploid phase, a carpospore can germinate to form a filamentous "conchocelis stage", which can also self-replicate using monospores. The conchocelis stage eventually produces conchosporangia. The resulting conchospore germinates to form a tiny prothallus with rhizoids, which develops to a cm-scale leafy thallus. This too can reproduce via monospores, which are produced inside the thallus itself.
Ficus aurea is a fast-growing tree. As a hemiepiphyte it germinates in the canopy of a host tree and begins life as an epiphyte before growing roots down to the ground. F. aurea is also a strangler fig (not all hemiepiphytic figs are stranglers)—the roots fuse and encircle the host tree. This usually results in the death of the host tree, since it effectively girdles the tree.
In bryophytes (mosses, liverworts, and hornworts), the gametophyte is the most visible stage of the life cycle. The bryophyte gametophyte is longer lived, nutritionally independent, and the sporophytes are typically attached to the gametophytes and dependent on them. When a moss spore germinates it grows to produce a filament of cells (called the protonema). The mature gametophyte of mosses develops into leafy shoots that produce sex organs (gametangia) that produce gametes.
Epifagus virginiana germinates when a chemical signal is released from the beech tree’s roots. During early stages of development, beechdrops lives independently from its host, instead relying on nutrients from the seed. It may take several years for an above ground structure to form. These early stages E. virginiana are a few millimeters in size and butter yellow. Beechdrops then develops a haustorium that grows into the host’s roots.
Lolium rigidum is grown as a forage crop in suitable areas. About 80% of the seed germinates in the autumn, soon after the first significant rains, and about 5% may remain dormant for twelve months. The plant has vigorous growth, and flowering is initiated when the day length is at least eight hours. This means that the crop has a relatively uniform flowering period in late winter/early spring.
Adult walnut twig beetles carry spores of the Geosmithia morbida fungus, which grows profusely around the pupal chamber of the beetles. Following emergence from trees the beetles subsequently tunnel into branches and trunks of walnut for production of egg galleries or overwintering shelters. The fungus is introduced into the tree during this wounding where it subsequently germinates and grows. The fungal mycelium initially colonize tissue immediately surrounding the beetle galleries.
Sunbirds are attracted by the flower nectar and perform most of the pollination. The pistil and anthers make contact with the sunbird's crown feathers, as it probes the perianth tube. Several species of birds eat the sweet fruit, the seeds of which are coated with a thick, sticky glue. This glue sticks to the beak, and is wiped off on another branch, where the seed is deposited and eventually germinates.
A zygospore remains dormant while it waits for environmental cues, such as light, moisture, heat, or chemicals secreted by plants. When the environment is favorable, the zygospore germinates, meiosis occurs, and haploid vegetative cells are released. In fungi, a sporangium is produced at the end of a sporangiophore that sheds spores. A fungus that forms zygospores is called a zygomycete, indicating that the class is characterized by this evolutionary development.
The fungus germinates every 24 to 48 hours, and where the germ tube exits the fungal spores has yet to be identified. P. ovale is very similar in appearance to both Cleistothelebolus nipigonensis and Cephalotheca palearum, however there are slight differences between their physical characteristics that make them identifiable. The multilayered cell wall of Cephalotheca and the faecal- restricted growth environment for C. nipigonensis distinguish these fungi from P. ovale.
These can then be sown on top of seed raising mix and watered. Once the water has drained through the mix, the pot should be placed in a plastic bag and refrigerated for two weeks. After this, the pot should be removed from the plastic bag and placed somewhere warm but not very sunny until the seed germinates (remembering to keep them moist but not wet). This could take several months.
Angiosperm life cycle Double fertilization refers to a process in which two sperm cells fertilize cells in the ovule. This process begins when a pollen grain adheres to the stigma of the pistil (female reproductive structure), germinates, and grows a long pollen tube. While this pollen tube is growing, a haploid generative cell travels down the tube behind the tube nucleus. The generative cell divides by mitosis to produce two haploid (n) sperm cells.
Unlike most plant pathogens, Typhula blight's dormant stage occurs in the warm conditions of the summer months as sclerotia, a hard survival structure. Upon favorable conditions of cold, wet weather, the sclerotia germinates grayish white spore-bearing bodies called basidiocarps to produce hyphae with clamp connections. The disease then infects the plant tissue and resumes the disease cycle. It is there where the pathogen produces sclerotia to survive the next summer months.
In spring or early summer, the plant bursts into a striking mass of small flowers, which range in colour from snow white, through to pale blue or lilac. Each flower has five petals, which form together in clusters of around four or five flowers. In summer, these flowers turn to small papery, urn-like fruits, containing several flat, disc-like seeds. Scaevola albida germinates readily from fresh seed and also strikes easily from cuttings.
Plants generally reproduce with spores or seeds, meaning those will be what germinates in a disaster's aftermath. But spores have advantages over seeds in the environmental conditions produced by a disaster. They're generally produced in higher numbers than seeds, and are smaller, aiding wind dispersal. While many wind-dispersed pollens of seed plants are smaller and farther dispersed than spores, pollen cannot germinate into a plant and must land in a receptive flower.
Seed germinates very well if it is sown in a free draining seed raising mix and kept warm (23–26 °C is recommended). P. lindeniana can be propagated by cuttings if semi-ripe, woody nodal or internodal cuttings are used. Use of an IBA rooting hormone increases the chance of success. Cuttings should be taken in the spring or autumn, and placed in a humid environment in a free draining rooting medium.
Though most fruits in the genus Ravenea have a fleshy mesocarp, R. musicalis has a spongy mesocarp, allowing the fruits to float and rot. A single brown seed, which germinates within the fruit, is 10–14 mm across with a hard, black seed coat. The germinated seed has a half-inch long hooked seed leaf, and when the seed sinks, the hook catches on the riverbed, allowing the seedling to establish itself.
Abelmoschus ficulneus germinates in the spring and summer months, after the effects of rainfall and irrigation have set in. The plant grows rapidly over spring and summer several months after emergence, through autumn. Mature seeds are produced within a month of flowering in the late summer and autumn seasons. The species is native to north and east Africa, Madagascar, Indomalaya and Northern Australia, where it has become a common crop weed, particularly in cotton.
Some schools conclude that karma continues to exist and adhere to the person until it works out its consequences. For the Sautrantika school, each act "perfumes" the individual or "plants a seed" that later germinates. Tibetan Buddhism stresses the state of mind at the time of death. To die with a peaceful mind will stimulate a virtuous seed and a fortunate rebirth; a disturbed mind will stimulate a non-virtuous seed and an unfortunate rebirth.
Stigmas and style of Cannabis sativa held in a pair of forceps Stigma of a Crocus flower. Stigmas can vary from long and slender to globe-shaped to feathery. The stigma is the receptive tip of the carpel(s), which receives pollen at pollination and on which the pollen grain germinates. The stigma is adapted to catch and trap pollen, either by combining pollen of visiting insects or by various hairs, flaps, or sculpturings.
It was cultivated in Greece as early as the 2nd millennium BCE, even though it originally came from the West Asia/North Africa region. Linear B tablets talk of its use in perfumes as well as use of spice from the seed and herb from its leaves. Coriander seeds were planted in the month of July but only germinates when its moistened. The species is particularly opposed to hot weather which mildews the coriander leaf.
2-5 The few-flowered Navarretia is a member of the Phlox family and was first collected northwest of the town of Lower Lake in 1945. It is an annual herb with lobed leaves, grows to a height of almost two inches,s and has tubular white or purple flower clusters. It germinates under water like many vernal pool species. May and June are when the plants bloom after the pool has dried.
"The apparent thoroughness with which kiore find and eat the kernels before the seed germinates shows that kiore can substantially reduce seedling numbers… Numbers of tawapou, and the proportion of tawapou trees in forest vegetation, will increase after rat eradication on any island that still retains tawapou trees" (Campbell et al., 1999:280). Norfolk Island also has various species of rats, which no doubt contributes to the endangered status of P. costata there.
This is a problem because it separates and isolates populations of the plant, preventing gene flow. When members of the population can only interbreed within that population, inbreeding depression can result. Fire suppression is also a threat, because when the natural fire regime is prevented, the canopy becomes thicker and shades out the plants. Fire also removes the organic layer on the forest floor, which is good for plant because it germinates more easily on bare soil.
The sporophyte and gametophyte represent two generations of A. rupestris, also known as the alternation of heteromorphic generations. The gametophyte stage starts with the haploid spore, which then germinates into a thalloid protonema. The protonema then gives rise to the leafy gametophyte which houses the male and female organs also known as the antheridia and archegonia, respectively. Andreaea rupestris are autoicous, meaning that their male and female organs exist on separate branches within the same gametophyte.
Many insects and some mites are specialized to feed on pollen, and are called palynivores. In non-flowering seed plants, pollen germinates in the pollen chamber, located beneath the micropyle, underneath the integuments of the ovule. A pollen tube is produced, which grows into the nucellus to provide nutrients for the developing sperm cells. Sperm cells of Pinophyta and Gnetophyta are without flagella, and are carried by the pollen tube, while those of Cycadophyta and Ginkgophyta have many flagella.
The dwarf rush is native to Europe, Asia and North Africa. In the British Isles it is only known from Anglesey, Cornwall and the Channel Islands, and is rare in all these locations. It germinates in autumn and grows in places where water stands in winter and which dry up completely in summer, meaning the plant faces little competition. These locations include rock ledges on sea cliffs, around outcrops of serpentine rock and in dune slacks.
This violet occurs in native to central and northern Europe and northern Asia. Its habitat is confined to very local damp, lime-rich places, in long herbage (fens and limy marshes). The plant is fussy about where it grows; seeds germinates in the spring on moist bare patches of base-rich peaty soil, but the seedlings only become established if the soil surface becomes drier. Most seeds germinate in close proximity to the parent plant so dispersal is limited.
Kratos is revealed to have been gathering materials to have Lloyd use the Eternal Sword. He succeeds but Mithos survives his apparent death and possesses a member from the party before fleeing to the comet Derris-Kharlan. Mithos attempts to take the Great Seed with him but is foiled and killed by Lloyd. Using the Eternal Sword, Lloyd merges Sylvarant and Tethe'alla together and germinates the Great Seed into a Giant Kharlan Tree to supply the world with mana.
Features of the perigynium may aid in seed dispersal, such as a surface that clings to fur or skin or a shape that enables dispersion via wind or water. Seed dispersal by animals such as ants (myrmechory) has been recorded, as some species of sedges have developed elaiosomes at the base of the perigynia. Ants carry the perigynium back to the nest, use the elaiosome for food, and the seed germinates away from the parent plant.
In the social pathway, they form a multi-cellular slug which then forms a fruiting body with asexually generated spores. In the sexual pathway, two cells fuse to form a giant cell that develops into a large cyst. When this macrocyst germinates, it releases hundreds of amoebic cells that are the product of meiotic recombination between the original two cells. The hyphae of the common mold (Rhizopus) are capable of producing both mitotic as well as meiotic spores.
Wahlenbergia stricta growing on a river bank Australian bluebells are generally easily propagated by division or root cutting. The seed is a very fine, black powder. It germinates readily in a few weeks and is best directly sown into tubes or cells as the seed and plant are very small and hard to separate and prick out. There are a number of common cultivars, including various shades of blue from a saturated blue similar to #00f through to white.
The fungus germinates in living organisms, kills and mummifies the insect, and then the fungus grows from the body of the insect. The hand-collected fungus-caterpillar combination is valued by herbalists and as a status symbol. It is used as an aphrodisiac and treatment for ailments such as fatigue and cancer, although such use is mainly based on traditional Chinese medicine, anecdote, and a limited amount of research. Clinical trials have not established its efficacy.
Spread initially in moist conditions, the pathogen requires physical transport either through mist and rain, or by direct contact with other infected needles. Once the needles have been exposed and the fungus germinates, the pathogen then penetrates the needle through the stoma. The ideal germination temperature is 12-18°C, with high levels of humidity. The needles will then begin to show signs of infection, and eventually the pathogen produces stromata, which is the pathogen's fruiting body.
This shows the button-like fruits of Bienertia cycloptera As a flower, Bienertia cycloptera produces both male and female flowers on the same plant, classifying as a monoecious plant. The fruits are shaped as small bubbles with a concave head. In its natural habitat, the plant germinates in the spring and then develops into the fall where reproductive growth happens via flowers. There are not enough pictures and research done on B. cyclopteras flowers and fruits that the distinction remains ambiguous.
Jesse Bonnell is an American artist whose work combines installation, video, photography, drawing and performance. He is a co-founder and director of Poor Dog Group, a Los Angeles-based collective dedicated to contemporary performance. His work germinates within visual art vocabularies, cinema, subverted theaterical idioms, non-hierarchal collaboration and lab-like experimentation. Nationally, Bonnell's work has been shown at REDCAT, Museum of Contemporary Art Santa Barbara, RADAR L.A., South Coast Repertory, Bootleg Theater, The Getty Villa, EMPAC and other site-specific locations.
Secondary conidia form a white, frost-like surface on honeydew drops and spread via the wind. No such process occurs in Claviceps purpurea, Claviceps grohii, Claviceps nigricans, and Claviceps zizaniae, all from northern temperate regions. When a mature sclerotium drops to the ground, the fungus remains dormant until proper conditions (such as the onset of spring or a rain period) trigger its fruiting phase. It germinates, forming one or several fruiting bodies with heads and stipes, variously coloured (resembling a tiny mushroom).
The law of negation was created to account for the tendency in nature to constantly increase the numerical quantity of all things. Marx and Engels decided that each entity tends to negate itself in order to reproduce itself in higher quantity. Engels often cited the case of the barley seed which, in its natural state, germinates and out of its own death or negation produces a plant. The plant in turn grows to maturity and is itself negated after bearing many barley seeds.
When the fungus germinates, it produces different kinds of esterases, including cutinase, which help the fungus to penetrate the plant cell wall. The disease can also affect other adjacent healthy fruits when distributed by wind or insect activity. Some species of Syncephalis can reduce the asexual reproduction of R. stolonifer and therefore may delay or even prevent the post-harvest disease caused by this fungus. Fengycin, which is an anti-fungal complex, also induces the fungal cell death via necrosis and apoptosis.
Tribulus terrestris in BoDD - Botanical Dermatology Database The "horns" are sharp enough to puncture bicycle tires and other air-filled tires. They can also cause painful injury to bare feet and can injure the mouths of livestock grazing on the plant. Within each bur, seeds are stacked on top of each other, separated by a hard membrane. As an adaptation to dry climates, the largest seed germinates first, while the others may wait until more moisture is available before germinating.
The pistil may be made up of one carpel or of several fused carpels (e.g. dicarpel or tricarpel), and therefore the ovary can contain part of one carpel or parts of several fused carpels. Above the ovary is the style and the stigma, which is where the pollen lands and germinates to grow down through the style to the ovary, and, for each individual pollen grain, to fertilize one individual ovule. Some wind pollinated flowers have much reduced and modified ovaries.
When they do, the plant community becomes a more open sclerophyll woodland until slow-growing plants with larger leaves take over. New shoots grow from the lignotuber, which survives bushfire as the rest of the plant above ground is burnt. The seed also germinates and grows in post-bushfire soil, which is higher in nutrients and more open with fewer competing plant species. Waratah seeds are often eaten—and destroyed—by animals and do not travel far (several metres) from the parent plants.
SEM image of pollen tubes growing from Lily pollen grains.A pollen tube is a tubular structure produced by the male gametophyte of seed plants when it germinates. Pollen tube elongation is an integral stage in the plant life cycle. The pollen tube acts as a conduit to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms.
Sown in a sandy substrate, it easily germinates at a temperature of 16–18° C. Zonal geraniums grow in U.S. Department of Agriculture hardiness zones 9 through 12. Zonal geraniums are basically tropical perennials and they overwinter in zones as cool as zone 7.Minimum Temperatures for Geranium Plants The whole plant with the exception of flowers gives off a characteristic smell. It blooms for a very long time (throughout the summer) and abundantly, however, most cultivated varieties do not produce seeds.
The life of a hornwort starts from a haploid spore. In most species, there is a single cell inside the spore, and a slender extension of this cell called the germ tube germinates from the proximal side of the spore. The tip of the germ tube divides to form an octant (solid geometry) of cells, and the first rhizoid grows as an extension of the original germ cell. The tip continues to divide new cells, which produces a thalloid protonema.
A traditional floor malting germinates the grains in a thin layer on a solid floor, and the grain is manually raked and turned to keep the grains loose and aerated. In a modern malt house the process is more automated, and the grain is germinated on a floor that is slotted to allow air to be forced through the grain bed. Large mechanical turners, e.g., Saladin boxes, keep the much thicker bed loose with higher productivity and better energy efficiency.
Bits of the pods may get caught up in floating vegetation debris and can be deposited with it in new territory. This plant occurs in freshwater tidal marshes that experience tidal action but low salinity. It grows in bare, disturbed areas that are mostly cleared of other vegetation, such as newly deposited shorelines or recently disturbed terrain dug out by muskrats. It germinates in wet soils but not in submerged areas, and it is not successful in areas with thick vegetation.
The stigma receives pollen and it is on the stigma that the pollen grain germinates. Often sticky, the stigma is adapted in various ways to catch and trap pollen with various hairs, flaps, or sculpturings.The Penguin Dictionary of Botany, edited by Elizabeth Toothill, Penguin Books 1984 The pollen may be captured from the air (wind-borne pollen, anemophily), from visiting insects or other animals (biotic pollination), or in rare cases from surrounding water (hydrophily). Stigma can vary from long and slender to globe shaped to feathery.
Just before the seed germinates, ABA levels decrease; during germination and early growth of the seedling, ABA levels decrease even more. As plants begin to produce shoots with fully functional leaves, ABA levels begin to increase again, slowing down cellular growth in more "mature" areas of the plant. Stress from water or predation affects ABA production and catabolism rates, mediating another cascade of effects that trigger specific responses from targeted cells. Scientists are still piecing together the complex interactions and effects of this and other phytohormones.
Depending on the species of mistletoe and the species of bird, the seeds are regurgitated from the crop, excreted in their droppings, or stuck to the bill, from which the bird wipes it onto a suitable branch. The seeds are coated with a sticky material called viscin. Some viscin remains on the seed and when it touches a stem, it sticks tenaciously. The viscin soon hardens and attaches the seed firmly to its future host, where it germinates and its haustorium penetrates the sound bark.
Puccinellia howellii is perennial bunchgrass, and grows in clumpy monotypic stands of stems up to 60 centimeters tall. The inflorescence is an array of branches a few centimeters long, the lower ones reflexed as the fruit matures. The grass reproduces only by seed, and seed is not produced until the individual is two years old or more. The plants are mostly dormant during warm months when the soil salinity is highest, and the seed germinates during wet seasons when water flow dilutes the salt.
Iris laevigata differs from other Japanese irises mainly in being more dependent on water and in lacking the strong midrib of the foliage. When grown from seeds, it usually germinates in 30–545 days although even under good conditions germination may be erratic. Seeds are sown about 6 mm deep in a peaty seed sowing mix at about 15–20 °C with frequent watering. Some varieties are almost ever-blooming even in mild climates, which makes it a good candidate for water gardens in temperate zones.
Anogeissus leiocarpa (African birch; ) is a tall deciduous tree native to the savannas of tropical Africa. It is the sole West African species of the genus Anogeissus, a genus otherwise distributed from tropical central and east Africa through tropical Southeast Asia. A. leiocarpa germinates in the new soils produced by seasonal wetlands and grows at the edges of the rainforest, although not in the rainforest, in the savanna, and along riverbanks forming gallery forests. The tree flowers in the rainy season, from June to October.
Mechanism to prevent selfing and allowing compatible pollen to grow a pollen tube for fertilization to take place Once the pollen grain is recognized and hydrated, the pollen grain germinates to grow a pollen tube. There is competition in this step as many pollen grains may compete to reach the egg. The stigma plays a role in guiding the sperm to a receptive ovule, in the case of many ovules. Only compatible pollen grains are allowed to grow as determined by signaling with the stigma.
The resulting zygote is initially biflagellate, but it soon encysts and germinates. It grows into a dichotomously branched sporophyte, which forms two types of sporangia: thin- walled zoosporangia that may be colorless or orange and thick-walled resting sporangia that are reddish-brown due to the presence of melanin pigments. The thin-walled zoosporangia give rise to motile zoospores that germinate and grow into another sporophyte. The resting sporangia undergo meiosis at germination and give rise to haploid zoospores that will germinate and grow into gametophytes.
Alternation of generations is defined as the alternation of multicellular diploid and haploid forms in the organism's life cycle, regardless of whether or not these forms are free- living. In some species, such as the alga Ulva lactuca, the diploid and haploid forms are indeed both free-living independent organisms, essentially identical in appearance and therefore said to be isomorphic. The free- swimming, haploid gametes form a diploid zygote which germinates into a multicellular diploid sporophyte. The sporophyte produces free-swimming haploid spores by meiosis that germinate into haploid gametophytes.
Shoots of differing lengths can be seen at all times during the year however they are most common during the springtime where the sun becomes stronger and they are able to photosynthesize more. Anthers become visible in December and through January. Once the anthers have been pollinated by either an insect or by wild pollination (wind dispersal/ browsing/ seed dispersal), the fruit takes approximately 12–15 months to fully ripen; the berries can be seen all year round. The seed germinates easily only if it doesn’t dry out.
In the gut of the host the spore germinates, it builds up osmotic pressure until its rigid wall ruptures at its thinnest point at the apex. The posterior vacuole swells, forcing the polar filament to rapidly eject the infectious content into the cytoplasm of the potential host. Simultaneously the material of the filament is rearranged to form a tube which functions as a hypodermic needle and penetrates the gut epithelium. Once inside the host cell, a sporoplasm grows, dividing or forming a multinucleate plasmodium, before producing new spores.
There is a period in the moss life cycle when they do have a double set of paired chromosomes, but this happens only during the sporophyte stage. Life cycle of a typical moss (Polytrichum commune) The moss life-cycle starts with a haploid spore that germinates to produce a protonema (pl. protonemata), which is either a mass of thread-like filaments or thalloid (flat and thallus-like). Massed moss protonemata typically look like a thin green felt, and may grow on damp soil, tree bark, rocks, concrete, or almost any other reasonably stable surface.
The Doctor and Sarah realise that Henderson is gone, and Sarah goes to look for him. She makes her way to the compost machine room, and Chase confronts her, telling him he’s become part of the plant world thanks to the Krynoid. Chase plans to support the Krynoid and refers to humanity as parasites, then attacks Sarah and knocks her unconscious. Beresford contacts the Doctor, who warns they have 15 minutes until the Krynoid germinates, spreading its seeds across England. The Doctor tells them to launch an air strike before it’s too late.
Controlled burning is also ineffective; it actually increases the number of yellow soldiers in the area. In studies conducted, it has been found that fire increases the germination rate of yellow soldier seeds, and does not kill off any of the plants, due to its ability to grow back from its root system. The yellow soldier also germinates faster after a fire than native plants, allowing it complete dominance over a larger area than before the fire. The only effective way to remove yellow soldier is through spot-spraying of herbicides.
If the sporangia germinate through the development of a vegetative germ tube, the germ tube will then develop into a mycelium and go on to produce many sporangia and sporangiospores. If the fungus germinates through the formation of secondary spores, these secondary spores will usually be slightly smaller than the parent spores. The secondary spores may also go on to produce many smaller microspores. In young cultures, the C. coronatus spores have a smooth appearance, however as they mature, the spores gradually become covered with short hair like projections called villi.
Monstera acuminata germinates in the ground and grows horizontally as a low prostrate herb. The juvenile plant is much smaller and heart-shaped with thick, roundish, waxy leaves which grow in two ranks and overlap each other with the stem elliptic in cross section and internodes 1–5 cm long and asymmetric leaves. When it encounters a tree trunk, it uses its ageotropic anchoring roots to grow vertically. The adult plant appears similar to that of Monstera deliciosa and these leaves are developed when the plant reaches 15 feet and is an example of dimorphism.
In contrast with vascular plants that only has two sets of chromosomes (diploid), bryophytes are known to have a haploid generation with a single set of chromosomes, this happens in the sporophyte stage of their life cycle. The life-cycle starts with a haploid spore that germinates to produce a protonema, which are thread-like filaments or thalloid. Protonema is a combination of chloronema, caulonema and rhizoids. Chloronema are usually first formed, they are irregularly branched, has transverse crosswalls that are not pigmented, and round chloroplasts with no buds forming yet.
This pattern of development is normally found in liverworts from xeric environments, rather than the those growing in moist habitats like Cavicularia. Once the young gametophyte germinates and ruptures the spore coat, it produces a multi- layered mass from which the adult plant will develop. Cavicularia is classified in the family Blasiaceae along with the genus Blasia, from which it is distinguished by the absence of a collar around the base of the sporophyte capsule, and a clustered arrangement of sperm-producing antheridia. Like Blasia, plants of Cavicularia possess domatia containing colonies of the blue- green alga Nostoc.
Mangroves begin as a seed called a propagule, which germinates while still attached to the tree. The seed has a long cylindrical shape that falls off the parent tree and either sticks in the mud growing next to the parent tree, or floats off to sea. These seeds have a very strong, protective covering that allows them to float and survive for long distances and periods of time. The seedling may finally reach a point of its destination where conditions are favorable, and the roots will begin to bury into the ground, forming a new mangrove tree.
Common knotweed germinates at or near the soil surface in early spring, as soon there is enough moisture, and grows in an upright position before it spreads out like a mat. If mowed, it will still spread and can form a mat as wide as in diameter. The seeds, which grow low to the ground, survive mowing and are not disturbed when stepped on by people and animals. Knotweed is a weed of waste areas but has been showing up in grain fields, where is becomes problematic because of its prolific seed production and long viability.
Freshwater gemmules may also include phytosynthesizing symbionts. The gemmules then become dormant, and in this state can survive cold, drying out, lack of oxygen and extreme variations in salinity. Freshwater gemmules often do not revive until the temperature drops, stays cold for a few months and then reaches a near-"normal" level. When a gemmule germinates, the archeocytes round the outside of the cluster transform into pinacocytes, a membrane over a pore in the shell bursts, the cluster of cells slowly emerges, and most of the remaining archeocytes transform into other cell types needed to make a functioning sponge.
Each of the subspecies, as distinguished by different male breeding plumage, is confined to one or more of these geographical regions. In Nigeria, the nominate subspecies generally travels southwards during the start of the rains in the north during June and July, when the grass seed germinates, and is no longer eaten by the queleas. When they reach the Benoue River valley, for instance, the rainy season has already passed and the grass has produced new seeds. After about six weeks, the birds migrate northwards to find a suitable breeding area, nurture a generation, and then repeat this sequence moving further north.
Oyster mushroom (Pleurotus ostreatus) growing fast on coffee grounds Mycelium as seen under a log Mycelium is the vegetative part of a fungus or fungus-like bacterial colony, consisting of a mass of branching, thread-like hyphae. The mass of hyphae is sometimes called shiro, especially within the fairy ring fungi. Fungal colonies composed of mycelium are found in and on soil and many other substrates. A typical single spore germinates into a monokaryotic mycelium, which cannot reproduce sexually; when two compatible monokaryotic mycelia join and form a dikaryotic mycelium, that mycelium may form fruiting bodies such as mushrooms.
When pollination occurs between species it can produce hybrid offspring in nature and in plant breeding work. In angiosperms, after the pollen grain (gametophyte) has landed on the stigma, it germinates and develops a pollen tube which grows down the style until it reaches an ovary. Its two gametes travel down the tube to where the gametophyte(s) containing the female gametes are held within the carpel. After entering an ovum cell through the micropyle, one male nucleus fuses with the polar bodies to produce the endosperm tissues, while the other fuses with the ovule to produce the embryo.
The term wool alien is used for any plant species whose occurrence at a particular site is due to transportation there as a result of the making of wool products. The most common source of wool aliens is when a plant, seed, or bur attaches to the wool of a sheep or other wool-producing animal prior to shearing. After the animal is shorn and the raw wool is transported to a refinery mill, the impurities are discarded along with the attached seed, which then successfully germinates. Wool aliens are typically found on waste ground near woollen mills.
This process is called pollination. In gymnosperms (literally naked seed) pollen comes into direct contact with the exposed ovule. In angiosperms the ovule is enclosed in the carpel, requiring a specialised structure, the stigma, to receive the pollen. On the surface of the stigma, the pollen germinates; that is, the male gametophyte penetrates the pollen wall into the stigma, and a pollen tube, an extension of the pollen grain, extends towards the carpel, carrying with it the sperm cells (male gametes) until they encounter the ovule, where they gain access through a pore in the ovule's integument (micropyle), allowing fertilisation to occur.
By the end of embryogenesis, the young plant will have all the parts necessary to begin in its life. Once the embryo germinates from its seed or parent plant, it begins to produce additional organs (leaves, stems, and roots) through the process of organogenesis. New roots grow from root meristems located at the tip of the root, and new stems and leaves grow from shoot meristems located at the tip of the shoot. Review. Branching occurs when small clumps of cells left behind by the meristem, and which have not yet undergone cellular differentiation to form a specialized tissue, begin to grow as the tip of a new root or shoot.
In almost all embryophytes, including most gymnosperms and all angiosperms, the male gametophytes (pollen grains) are the primary mode of dispersal, for example via wind or insect pollination, eliminating the need for water to bridge the gap between male and female. Each pollen grain contains a spermatogenous (generative) cell. Once the pollen lands on the stigma of a receptive flower, it germinates and starts growing a pollen tube through the carpel. Before the tube reaches the ovule, the nucleus of the generative cell in the pollen grain divides and gives rise to two sperm nuclei, which are then discharged through the tube into the ovule for fertilization.
Hyaloperonospora differs from Perofascia in that its sporangiophores are tree-like, its haustoria are lobate to globose, and the walls of its oospores are relatively thinner. The life history does not differ from that of Peronospora, the genus that Hyaloperonospora species used to be classified under. It begins as sporangia, which are small spore-like structure, and when it lands next to a leaf stoma, it germinates a germ-tube. The germ tube enters the leaf cell creating a haustorium, which allows the mould the uptake nutrients from the leaf. The mould will continue to grow, with hyphae extending into the leaf’s intercellular space.
Germination of the seeds depends on the condition where the seed has been dispersed; if it is dispersed under a cover of moss the seed is slow to germinate, but it germinates rapidly if dispersed on bare soil without any cover. K. serotina is a fast growing trees or shrub, but is short lived, living up to 80 – 150 years. The juvenile K. serotina takes approximately seven years (less than ten) to reach reproductive maturity, at which point the tree or shrub reaches a height of 1.5m. During its short lifespan the tree or shrub grows to a height of approximately 15m, increasing the trunk to about 60 cm in diameter.
By the end of embryogenesis, the young plant will have all the parts necessary to begin its life. Once the embryo germinates from its seed or parent plant, it begins to produce additional organs (leaves, stems, and roots) through the process of organogenesis. New roots grow from root meristems located at the tip of the root, and new stems and leaves grow from shoot meristems located at the tip of the shoot. Branching occurs when small clumps of cells left behind by the meristem, and which have not yet undergone cellular differentiation to form a specialized tissue, begin to grow as the tip of a new root or shoot.
By the end of embryogenesis, the young plant will have all the parts necessary to begin in its life. Once the embryo germinates from its seed or parent plant, it begins to produce additional organs (leaves, stems, and roots) through the process of organogenesis. New roots grow from root meristems located at the tip of the root, and new stems and leaves grow from shoot meristems located at the tip of the shoot. Review. Branching occurs when small clumps of cells left behind by the meristem, and which have not yet undergone cellular differentiation to form a specialized tissue, begin to grow as the tip of a new root or shoot.
The life both in family and community is depicted as the fundamental social forms, with some hints of national life. The love story of the young couple is free from wild romance, indeed their love makes them look to the future not with any anticipation of pleasure or extravagance, but with the instinctive conviction that the true blessings of life flow from the performance of necessary tasks. The public spirit of Hermann's father germinates also in the son's character as his burning patriotism protests against the French invasion. But the spirit that permeates the poem as a whole is that of trust in the future and sympathy with mankind.
Scientists conclude that the spots are an example of mimicry of the pollinator, that result in more visits by male specimens of the pollinator that are deceived into thinking the spots are females; G. diffusa is not unique in doing this, but it is a phenomenon largely restricted to orchids. Like the other species of Gorteria, the cypselas do not part from the flower head when ripe, but initially mostly only one germinates while remaining in the flower head. In G. diffusa, it has been observed that the other cypselas germinate in later years, thus making it possible to bridge periods of drought, when seed setting may not succeed.
Soy protein is generally regarded as stored protein held in discrete particles called "protein bodies" estimated to contain at least 60% to 70% of the total protein within the soybean seed. This protein is important to the growth of new soybean plants, and when the soybean seed germinates, the protein will be digested, and the released amino acids will be transported to locations of seedling growth. Legume proteins, such as soy and pulses, belong to the globulin family of seed storage proteins called legumin (11S globulin fraction) and vicilins (7S globulin), or in the case of soybeans, glycinin and beta-conglycinin. Grains contain a third type of storage protein called gluten or "prolamines".
The prominent position and striking colour of Telopea mongaensis and many of its relatives within the subtribe Embothriinae both in Australia and South America strongly suggest it is adapted to pollination by birds, and has been for over 60 million years. Telopea mongaensis has a swollen woody base largely under the soil known as a lignotuber, which stores energy and nutrients as a resource for rapid growth after a bushfire. New shoots grow from the lignotuber, which survives bushfire as the rest of the plant above ground is burnt. The seed also germinates and grows in post-bushfire soil, which is higher in nutrients and more open with fewer competing plant species.
A day-flying hummingbird hawk-moth drinking nectar from a species of Dianthus Most species of Lepidoptera engage in some form of entomophily (more specifically psychophily and phalaenophily for butterflies and moths, respectively), or the pollination of flowers. Most adult butterflies and moths feed on the nectar inside flowers, using their probosces to reach the nectar hidden at the base of the petals. In the process, the adults brush against the flowers' stamens, on which the reproductive pollen is made and stored. The pollen is transferred on appendages on the adults, which fly to the next flower to feed and unwittingly deposit the pollen on the stigma of the next flower, where the pollen germinates and fertilizes the seeds.
A mistletoe seed germinates on the branch of a host tree or shrub, and in its early stages of development it is independent of its host. It commonly has two or even four embryos, each producing its hypocotyl, that grows towards the bark of the host under the influence of light and gravity, and potentially each forming a mistletoe plant in a clump. Possibly as an adaptation to assist in guiding the process of growing away from the light, the adhesive on the seed tends to darken the bark. On having made contact with the bark, the hypocotyl, with only a rudimentary scrap of root tissue at its tip penetrates it, a process that may take a year or more.
The wildfires which periodically burn through the natural habitat of this species destroy the adult plants, but the seeds are able to survive such an event. Death after fires is quite comprehensive: of 239 plants investigated after being caught in a wildfire, only one survived; even the plants which were only lightly singed and initially attempted to re-sprout soon died. However, because their habitat is so rocky and inhospitable, fires are commonly unable to completely destroy all the plants in a particular population, typically 2-27% of the population survives. Despite this, the species germinates best on those spots where fires have reduced the competing vegetation to ash lying on the bare ground, as opposed to more rocky places where it might be protected.
A majority of research in 2011-2017 has focused on the use of herbicides to control B. tectorum and their effect on native plant communities. When using herbicides to suppress winter annual grasses the two most important factors that influence success are application timing and residual soil activity. Application timing is split into three main categories: pre-emergence in the fall before Bromus tectorum germinates, early post-emergence in early spring when B. tectorum is a seedling, and late post- emergence in late spring after B. tectorum is mature. To be most effective post-emergence application needs to be done as late in the spring as possible to ensure that the herbicide treatment hits the majority of the B. tectorum population.
In some species of mangroves, for instance, the seed germinates and grows from its own resources while still attached to its parent. Seedlings of some species are dispersed by currents if they drop into the water, but others develop a heavy, straight taproot that commonly penetrates mud when the seedling drops, thereby effectively planting the seedling. This contrasts with the examples of vegetative reproduction mentioned above, in that the mangrove plantlets are true seedlings produced by sexual reproduction. In some trees, like jackfruit, some citrus, and avocado, the seeds can be found already germinated while the fruit goes overripe; strictly speaking this condition cannot be described as vivipary, but the moist and humid conditions provided by the fruit mimic a wet soil that encourages germination.
What constitutes a hook — a repeated refrain of "I care for you, care for you" — is complemented by softly puttering synths, which become increasingly layered as the track progresses, punctuated by discrete moments of silence". According to Winston Cook-Wilson of Spin, "the track opens with a long passage that sounds distinctly liturgical, reminiscent of centuries-old sacred polyphony. The vocals for the first minute of the song do not form clear lyrics, but their phonemes, at relevant moment, recall words from a Catholic Mass: "fili" and "sanctus."" The journalist moreover observes that "the musical complexity swirling around the vocals germinates gradually, as she rephrases the line "I care for you" over and over again, as if convincing herself of the point in real time.
A high proportion of the first type of subterranean cypselas germinates quickly, while in the second type germination is spread over time due to inhibition by hormones from the fruit skin. The cypselas in the aerial flower heads form from April to May and neither shows delayed germination, but the three types differ in the way they disperse. Those bordering the involucre have short and scaly pappus and are subtended by a bract, to be released with the flower head when it breaks free from the dead mother plant, resulting in dispersal over a short distance. The cypselas at the centre of the flower head however carry much longer pappus and dislodge much sooner to be carried off by the wind over larger distances.
Lepidodendrales (from the Greek for "scale tree") were primitive, vascular, arborescent (tree-like) plants related to the lycopsids (club mosses). Members of Lepidodendrales are the best understood of the fossil lycopsids due to the vast diversity of Lepidodendrales specimens and the diversity in which they were preserved; the extensive distribution of Lepidodendrales specimens as well as their well-preservedness lends paleobotanists exceptionally detailed knowledge of the coal-swamp giants’ reproductive biology, vegetative development, and role in their paleoecosystem. The defining characteristics of the Lepidodendrales are their secondary xylem, extensive periderm development, three-zoned cortex, rootlike appendages known as stigmarian rootlets arranged in a spiralling pattern, and megasporangium each containing a single functional megaspore that germinates inside the sporangium. Many of these different plant organs have been assigned both generic and specific names as relatively few have been found organically attached to each other.
Tulip anther with many grains of pollen Closeup image of a cactus flower and its stamens Scanning electron microscope image (500x magnification) of pollen grains from a variety of common plants: sunflower (Helianthus annuus), morning glory (Ipomoea purpurea), prairie hollyhock (Sidalcea malviflora'’), oriental lily (Lilium auratum), evening primrose (Oenothera fruticosa), and castor bean (Ricinus communis). Pollen is a powdery substance consisting of pollen grains which are male microgametophytes of seed plants, which produce male gametes (sperm cells). Pollen grains have a hard coat made of sporopollenin that protects the gametophytes during the process of their movement from the stamens to the pistil of flowering plants, or from the male cone to the female cone of coniferous plants. If pollen lands on a compatible pistil or female cone, it germinates, producing a pollen tube that transfers the sperm to the ovule containing the female gametophyte.
The pollen grains are dispersed by the wind to the female, ovulate cone that is made up of many overlapping scales (sporophylls, and thus megasporophylls), each protecting two ovules, each of which consists of a megasporangium (the nucellus) wrapped in two layers of tissue, the integument and the cupule, that were derived from highly modified branches of ancestral gymnosperms. When a pollen grain lands close enough to the tip of an ovule, it is drawn in through the micropyle ( a pore in the integuments covering the tip of the ovule) often by means of a drop of liquid known as a pollination drop. The pollen enters a pollen chamber close to the nucellus, and there it may wait for a year before it germinates and forms a pollen tube that grows through the wall of the megasporangium (=nucellus) where fertilisation takes place. During this time, the megaspore mother cell divides by meiosis to form four haploid cells, three of which degenerate.
Between Oficio de tinieblas 5 (Trade of Darkness 5) by Camilo José Cela –for searching a new and unruly order in literature- and the Petites Poemes en Prose (Little Poems in Prose) by Charles Baudelaire –for their poetic nature concentrated in the minimal narrative structure- comes Medrano's "El hombre entre las rocas". Between Oppium (Opium: The Diary of a Cure) by Jean Cocteau –for its attempt at a constant diary of all work- and James Joyce's Finnegans Wake –in its plausible attempt to fixate an episodic syntax, through formulas that the author plays with and is not going to give up- appears this little jewel. With the freedom of Samuel Beckett –letting the verbal river flow- and the aphasia of Louis-Ferdinand Celine –unworried about the style that his own work germinates- Medrano elaborates this little verbal artifact, without comparison in our days, the modernity of which is that of the very tradition that is assimilated – the quoted authors and many others- trying its maximum use as conscience lash and sublime purge of styles.
According to Bonacich, "The central hypothesis [deriving from split labor market theory] is that ethnic antagonism first germinates in a labor market split along racial lines". Split labor market theory traces the roots of racial/ethnic stratification to social and political differences that predate inter-group contact in the labor market, but the specific outcomes (caste system, exclusion, or something else) result mainly from the actions of the higher paid segment of the working class and their power relative to that of capital. In one of the best-known applications of split labor market theory, William Julius Wilson argued in The Declining Significance of Race that a split labor market provided much of the racial antagonism between blacks and whites during the earlier years of what he called the period of industrial race relations. Wilson argued that this did not last, however, as "the passage of protective union legislation during the New Deal era, and the equal employment legislation in the early sixties have virtually eliminated the tendency of employers to create a split labor market in which black labor is deemed cheaper than white labor regardless of the work performed".

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