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Ultrastructure of microsporogenesis and microgametogenesis in Brachypodium distachyon
Protoplasma, 2015Brachypodium distachyon has emerged as a model system for forage grass and cereal grain species. Here, we report B. distachyon pollen development at the ultrastructural level. The process of microsporogenesis and microgametogenesis in B. distachyon follows the typical angiosperm pollen development sequence.
Akanksha, Sharma +2 more
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MICROSPOROGENESIS IN JATROPHA CURCAS L.
Acta Horticulturae, 2012Jatropha curcas L. is an important oil crop for biofuel production. As such, the yield is commercially important and breeding programmes are focused to select and propagate high yielding individuals. Haploid plants are very useful in these programmes to produce true homozygotes in a short period of time.
L.M. Currais +2 more
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Microsporogenesis and megasporogenesis in Sinofranchetia (Lardizabalaceae)
Flora - Morphology, Distribution, Functional Ecology of Plants, 2012Abstract Sinofranchetia Hemsl. (Lardizabalaceae) is a monotypic genus endemic to China. A recent combined analysis of molecular sequence data and morphology suggested that Sinofranchetia should be placed in tribe Sinofranchetieae. Embryology of taxa can be complementary to molecular phylogenetics and of special value at the genus level; however ...
Xiao-hui Zhang, Yi Ren, Xian-hua Tian
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Evolution of Microsporogenesis in Palms (Arecaceae)
International Journal of Plant Sciences, 2007The main features of microsporogenesis, or male meiosis (cytokinesis, intersporal wall formation, and tetrad form), are described in 24 species of palms (Arecaceae). The species examined belong to two of the five subfamilies recognized in the latest classification of the family.
Sannier, Julie +3 more
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MICROSPOROGENESIS IN CITRUS LIMON (RUTACEAE)
American Journal of Botany, 1971Prior to meiosis tapetal cells become binucleate, and callose deposition separates spore mother cells from each other. No cytomictic channels are present during meiosis. Cytokinesis is simultaneous, by furrowing. The primexine and a rudimentary exine are laid down while the microspores are still in tetrads.
Harry T. Horner, Nels R. Lersten
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MICROSPOROGENESIS IN PEANUT (ARACHIS HYPOGAEA)
American Journal of Botany, 1990The stage of pollen development at the time of anther culture is an important factor in the production of haploids. The objectives of the current study were to develop a staining procedure for peanut (Arachis hypogaea L., ssp. hypogaea) microspores, to describe and document the stages of microsporogenesis in peanut, and to confirm a previous report ...
Martha C. Willcox +3 more
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THE EFFECT OF DEHYDRATION ON MICROSPOROGENESIS IN TRADESCANTIA
American Journal of Botany, 1939NUMEROUS STUDIES have been made of the effect of various agencies such as chemicals, abnormal temperature, radiation, and genetic factors in producing abnormal nuclear and cell division. Experimental observations have been made on both living and fixed material.
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Chromosomal Behavior During Microsporogenesis
1994The developmental stages of maize microsporogenesis have been examined to determine the time interval of floret maturation and stage duration (Hsu and Peterson 1981; Hsu et al. 1988), to identify meiotic mutants and genetic male sterility (Albertsen and Phillips 1981; Curtis 1985; Golubovskay and Khristolyubova 1985; Staiger and Cande 1991), to study ...
Ming T. Chang, M. Gerald Neuffer
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Gene Expression During Microsporogenesis
1992Naturally-occurring haploids have been known in the plant kingdom for many years; for example Blackslee et al recorded a haploid mutant of Datura as long ago as 1922. While it was appreciated that doubled haploids would provide the most effective route for the production of homozygous lines for plant breeding, this approach could not be applied since ...
M. A. Zaki, H. G. Dickinson
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Microsporogenesis and Cytokinesis in Asimina triloba
Botanical Gazette, 19361. During meiosis the chromatin material of the pollen mother cells undergoes parasynaptic association. 2. At synizesis the chromatic knot lies on the side of the nucleus farthest from the mother cell wall. 3. The haploid number of chromosomes is apparently nine. 4. Cytokinesis of the pollen mother cells is by successive constriction.
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