Results 181 to 190 of about 5,131 (204)
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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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Microsporogenesis in angiosperms producing pantoporate pollen
Botany Letters, 2019Pollen grains are produced during meiosis (microsporogenesis), in the anthers of flower buds. Apertures are usually formed at the last points of contact between the microspores.
Charlotte Prieu +3 more
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DNA-protein relations during microsporogenesis of Tradescantia
Chromosoma, 19501. The morphology of gametogenesis in Tradescantia paludosa is reviewed. 2. Microscopic photometric measurements indicate (a) a progressive increase in DNA content from the time of tetrad formation until microspore mitosis; (b) there is equipartition of DNA between generative and vegetative nuclei; (c) that there is a further increase in
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Microsporogenesis in Larix laricina
Canadian Journal of Botany, 1982Microsporogenesis was studied in Larix laricina in eastern Newfoundland at weekly intervals from October to April in four successive seasons. Male strobili were fixed in a 3:1 ethanol – propionic acid mixture, stained in alcoholic carmine, and squashed in 45% acetic acid.Pollen mother cells began development from interphase in early October and passed
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