megaspore

megaspore
noun Etymology: International Scientific Vocabulary Date: 1857 a spore in heterosporous plants giving rise to female gametophytes and usually larger than a microspore • megasporic adjective

New Collegiate Dictionary. 2001.

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  • megaspore — megaspore. См. макроспора. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • megaspore — (n.) 1857, from MEGA (Cf. mega ) + SPORE (Cf. spore) …   Etymology dictionary

  • megaspore — [meg′ə spôr΄] n. [ MEGA + SPORE] a haploid spore, usually larger than a microspore of the same plant, which gives rise to a female gametophyte: found in all vascular plants that have differentiated sexes in the gametophyte megasporic adj …   English World dictionary

  • Megaspore — Plant ovules with megasporocytes before meiosis: Gymnosperm ovule on left, angiosperm ovule (inside ovary) on right Megaspores, also called macrospores, are a type of spore that is present in heterosporous plants. These types of plants have two… …   Wikipedia

  • Mégaspore — Macrospore La macrospore (ou mégaspore) est une cellule haploïde issue de la méiose à l origine du gamétophyte femelle. Chez les végétaux, une macrospore (ou mégaspore) haploïde (n) est issue de la méïose d une cellule mère diploïde (2n), le… …   Wikipédia en Français

  • megaspore — SYN: macrospore. * * * mega·spore meg ə .spō(ə)r, .spȯ(ə)r n 1) a spore in heterosporous plants that gives rise to female gametophytes and is generally larger than a microspore 2) MACROSPORE mega·spor·ic .meg ə spōr ik, spȯr adj * * *… …   Medical dictionary

  • megaspore — megaspora statusas T sritis augalininkystė apibrėžtis Viena iš keturių haploidinių ląstelių, susidarančių megasporocitų mejozės metu. Iš tos ląstelės susidaro moteriškasis gametofitas, t. y. gemalo maišelis. atitikmenys: angl. macrospore;… …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • megaspore competition — megaspore competition. См. конкуренция макроспор. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • megaspore mother cell — megaspore mother cell. См. материнская клетка мегаспор. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Megaspore mother cell — A megaspore mother cell is a diploid cell in which meiosis will occur, resulting in the production of four megaspores.[1] This megasporcyte is formed from two distinct processes – megasporogenesis and megagametogenesis.[2] Within each sporangium …   Wikipedia

  • megaspore mother cell — a type of diploid cell that develops in the megasporangium of plants and divides by meiosis to produce four haploid daughter cells called the megaspores; usually only one megaspore survives to become a megagametophyte (female gametophyte) …   Medical dictionary

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