microspore


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

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 ?
Recalcitrant nature of some genotypes in microspore embryogenesis could be referred to the ability of formation of the competent microspores that is under the control of cytoplasmic and genomic genes and are under the influence of the environment (Testillano et al.
Microspore tetrads were formed via prophase II, metaphase II, anaphase II, and telophase II (Fig.
Letarte J, Simion E, Miner, M, Kasha KJ (2006) Arabinogalactans and arabinogalactan-proteins induce embryogenesis in wheat (Triticum aestivum L.) microspore culture.
The haploid microspore nucleus divides mitotically to produce two haploid nuclei: the tube nucleus and the generative nucleus.
microsporangium The structure in which microspores are produced.
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.M.C undergo successive type.
Each of the spirally arranged microsporophylls (scales) contains two microsporangia, and each microsporangia contains many microspore mother cells, which undergo meiosis to produce four haploid microspores.
The frequency of univalents, bivalents, trivalents, and quadrivalents were determined in at least 10 microspore mother cells (616 total) from each of 50 euploid plants at metaphase I.
In this study, the effects of applications of colchicine on microspore cultures were evaluated in 4 radish (Raphanussativus L.) varieties.
It was shown that anther abortion in the double recessive GMS line, ms5ms6, of upland cotton occurred during PMC and microspore stage.
At this stage, microspore mother cells (Microsporocytes), were also detectable (Fig1 J).