microspore


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microspore

the smaller of the two types of SPORE produced by ferns and higher plants, giving rise to the male GAMETOPHYTE. In TRACHEOPHYTES the microspore is the POLLEN GRAIN. Compare MEGASPORE.
References in periodicals archive ?
Besides the genotype and the developmental stage of the microspore, the third critical factor is culture conditions, and in particular the physical and/or chemical treatment necessary to trigger microspore embryogenesis.
Three thousand five hundred and fifty meiocytes in prophase I, metaphase I, anaphase I and 1635 tetrads and microspores were analysed.
Soon, the wall surrounding the 4 microspore cells dissolve and the microspores in the pollen sac are released.
Key words: Microspore culture, callus, colchicine, Raphanussativus L.
In vitro induction of haploid plants in unpollinated ovules, anther and microspore culture of Cucumis sativus.
Each microspore mother cell undergoes meiosis; during which M.
In this third type, the cell walls degenerate and the individual protoplasts, without formation of a plasmodium, intmde the locules often in a cyclic pattern during microspore development.
com, or MSN Live Search, find more information by searching for these words or phrases: after riping, dioecious, generative cell, integument, microsporangia, microspore mother cell, nucellus, ovule, polyembryony, seed coat, self-incompatible, and tube cell.
Exuberant metabolism of the tapetum could provide enzymes, hormones, favorable nutrition for developing PMCs and microspores, and regulate the proper release of microspore (Zhao et al.
There was a significant correlation between microspore mother cell divisions and anther's tapetum development that is coincides with other reports for dicotyledonous plants [7,10,6].