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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 in the Cucurbitaceae
Botanical Gazette, 19301. Darkly staining granules are present among the bivalent chromosomes in late diakinesis in all members of Cucurbita, but are absent in Citrullus, Luffa, and Cucumis. 2. Cucurbita pepo and C. maxima each has twenty bivalent chromosomes. 3. Citrullus vulgaris has eleven bivalent chromosomes; Luffa cylindrica, eleven; Cucumis melo, twelve.
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Evolution of Microsporogenesis in Angiosperms
International Journal of Plant Sciences, 2002Microsporogenesis is highly labile in early‐branching angiosperms, i.e., those with mostly sulcate pollen, compared with the tricolpate and tricolpate‐derived eudicots. New records of microsporogenesis in basal angiosperms (19 taxa were examined), together with a review of the literature, demonstrate that the existing typology has been too strictly ...
Carol A. Furness +2 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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Gibberellin regulates post‐microsporogenesis processes in petunia anthers
Physiologia Plantarum, 2002Previous studies have suggested that gibberellins (GAs) are produced in petunia anthers and transported to the corolla to induce growth and pigmentation. In this work, we studied the role of GA in the regulation of anther development. When petunia plants were treated with the GA‐biosynthesis inhibitor paclobutrazol, anther development was arrested ...
Anat, Izhaki +3 more
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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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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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DNA Synthesis During Microsporogenesis
1977Meiosis is a major and critical event in microsporogenesis. In the course of that event, the processes of pairing and crossing-over activate elements of chromosome organization that are probably not required for vegetative growth and reproduction.
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