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Related to megasporocyte: megagametophyte


n. Botany
A cell that undergoes meiosis to produce four megaspores. Also called megaspore mother cell.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
This archesporial cell functioned as a megasporocyte and was easily distinguished from other cells because of its large size, prominent nucellus and dense cytoplasm (Fig.
megaspore: Haploid cell produced by meiosis in the ovules of angiosperms; a single megasporocyte produces four megaspores, only one of which remains functional.
Megasporocyte callose in apomictic buffelgrass, Kentucky bluegrass, Pennisetum squamulatum Fresen, Tripsacum L., and weeping lovegrass.
In a young ovule this line is approximately at the base of the megasporocyte (megaspore mother cell), but in some taxa the nucellus later proliferates, so that it may eventually lie below the ends of the integuments (e.g., in pachychalazal ovules: see below).
An archesporial cell in the nucellus tissue would directly develop into a megasporocyte that subsequently formed the megaspore tetrads aftermeiosis.
megasporocyte: a diploid (2n) cell that undergoes meiosis and produces four haploid (1n) megaspores.
The primary sporogenous cell enlarges to form megasporocyte. After meiotic division, megaspores organize in an isobilateral manner of tetrad.
gnemon two to eight megaspore mother cells (megasporocytes) differentiate within each ovule.
This and other cytological phenomena similar to early embryo sac development led Battaglia (1989) to hypothesize that megasporocytes of tetrasporic and bisporic species undergo partial "gametophytization" before or during meiosis.