germination

germination

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Sprouting of a seed, spore, or other reproductive body, usually after a period of dormancy.

Absorption of water, passage of time, chilling, warming, oxygen availability, and light exposure may all operate in initiating the germination process. The carefully controlled mass germination of cereal seeds supplies enzymes for the making of alcoholic beverages and for other industries; spores of the commercially cultivated mushroom Agaricus brunescens are also mass germinated.

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▪ botany
 the sprouting of a seed, spore, or other reproductive body, usually after a period of dormancy (see afterripening). The absorption of water, passage of time, chilling, warming, oxygen availability, and light exposure may all operate in initiating the process.

      Germination sometimes occurs early in the development process; the mangrove (Rhizophora) embryo develops within the ovule, pushing out a swollen rudimentary root through the still-attached flower. In peas and corn (maize), the cotyledons (cotyledon) (seed leaves) remain underground; in other species (beans, sunflowers, etc.), the hypocotyl (embryonic stem) grows several inches above the ground, carrying the cotyledons into the light, in which they become green and often leaflike. The carefully controlled mass germination of cereal seeds supplies enzymes for the making of alcoholic beverages and for other industries as well. Spores of the commercially cultivated edible mushroom Agaricus brunescens are also mass germinated.

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Universalium. 2010.

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Look at other dictionaries:

  • GERMINATION — En biologie végétale, la germination se définit, à quelques nuances près, comme le «phénomène par lequel l’embryon croît en utilisant les réserves de la graine; la germination peut être considérée comme terminée lorsque la plantule est autotrophe …   Encyclopédie Universelle

  • Germination — is the process whereby growth emerges from a period of dormancy. The most common example of germination is the sprouting of a seedling from a seed of an angiosperm or gymnosperm. However, the growth of a sporeling from a spore, for example the… …   Wikipedia

  • Germination — Ger mi*na tion, n. [L. germinatio: cf. F. germination.] The process of germinating; the beginning of vegetation or growth in a seed or plant; the first development of germs, either animal or vegetable. [1913 Webster] {Germination apparatus}, an… …   The Collaborative International Dictionary of English

  • Germination — (v. lat.), das Keimen, Sprossen …   Pierer's Universal-Lexikon

  • Germination — (lat.), das Keimen, Keimzeit; germinieren, keimen, sprossen …   Kleines Konversations-Lexikon

  • Germination — Germination, lat. deutsch, das Keimen. Sprossen …   Herders Conversations-Lexikon

  • germination — index development (progression), growth (evolution) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • germination — mid 15c., from L. germinationem (nom. germinatio) sprouting forth, budding, noun of action from pp. stem of germinare to sprout, put forth shoots, from germen (gen. germinis) a sprout or bud (see GERM (Cf. germ)) …   Etymology dictionary

  • Germination — Pour la germination en science des matériaux (métallurgie), voir l article Précipité  . Germination épigée de graines de tournesol La germinati …   Wikipédia en Français

  • GERMINATION — s. f. T. de Botan. Il se dit Du premier développement des parties qui sont contenues dans le germe d une semence. La chaleur et l humidité avancent la germination des semences. Il est curieux d observer les progrès de la germination des plantes.… …   Dictionnaire de l'Academie Francaise, 7eme edition (1835)

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