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Showing 1 to 17 of 17 for “"Microspore"”.
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Microspore-specific expression of a gene from tobacco
Contains fulltext : mmubn000001_246032790.pdf (Publisher’s version ) (Open Access)
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Microspore Wall Morphogenesis and Orbicule Ultrastructure of <i>Isoetes</i>
<p>The microspore wall morphogenesis and orbicule ultrastructure of <em>Isoetes</em> were studied using electron microscopy. Microspore wall morphogenesis in five species of <em>Isoetes</em> (<em>I. appalachiana, I. engelmannii, I. hyemalis, I. piedmontana,</em> and an undescribed species from York …
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Investigations on the cytology and life-cycle of the parasitic dinoflagellate Hematodinium sp associated with mortality of Nephrops norvegicus
… - a larger macrospore and a smaller, more active microspore. Individual isolates produce one or the other, not both. Condensation of chromosomes in the nucleus is more pronounced in the microspore than in the macrospore. Both spore types germinate after 18-62 days in the culture medium to produce …
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Systematic implications of leaf anatomy and palynology in the Disinae and Coryciinae (Orchidaceae)
… massulae, and elongated tetrads with linear microspore configuration. Bibliography: pages 107-123.
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THE ROLE OF AURORA KINASE IN THE DEVELOPING MALE GAMETOPHYTE OF MARSILEA VESTITA
… that arises de novo at ~3.5 hours following microspore hydration and functions as a microtubule organizing center during the final mitotic division. I investigated the roles of aurora kinases in the formation and maturation of the blepharoplast. Three unique aurora kinase isoforms were found …
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Application of molecular markers to characterize potato plants derived from anther culture and protoplast fusion
… ploidy level can be realised through anther and microspore culture. This method bears a great deal of significance in that it provides a selection against lethal recessive genes. Monoploids carry only a single set of chromosomes and every locus carries only one allele. So the surviving monoploids …
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Derivation and Comparison of Androgenic and Gynogenic Monoploid Potato Families
… can be derived either paternally through anther/microspore culture or maternally through crossing with a haploid-inducing pollinator. Evidence from other genera suggests that androgenic and gynogenic haploid populations derived from the same parent may differ due to gametic selection and/or …
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Molecular Systematics of <i>Isoëtes</i> (Isoëtaceae) in Eastern North America
… Ancestral state reconstruction of megaspore and microspore ornamentation, megaspore color, and seasonality of spore maturation found that more than 80% of these character state transitions occurred on terminal tips of the tree, and that some shared morphological characters are the result of …
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Embryogenic response of potato anther culture to colchicine
… anther culture such that a single embryogenic microspore can generate many anther-derived plants.
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Transposon Tagging in Strawberry and Potato and Characterization of Representative Strawberry Mutants
… the transposase gene, as well as switching to microspore specific promoters that had been well characterized to control timing of expression of the transposase gene. Transposants were found in both T0 primary regenerates and anther culture derived potatoes using both the pAcDs-AtSCP and …
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Genetic and Physiological Bases of Heat-Induced Floret Sterility in Wheat
… to early meiosis to late uni-nucleate microspore stage of pollen development. In Chapter 7, mechanisms of heat-induced floret sterility tolerance conferred by the chromosome 2B QTL, and its mode of expression, were investigated. Chromatin and pollen starch staining in the cvs. Drysdale …
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Function of C1A barley peptidases and their inhibitors (cystatins) in barley seed germination : Funcion de las peptidasas C1A de cebada y sus inhibidores (cistatinas) en la germinacion de la semilla
… produced through the double haploid technique by microspore culture. Resumen La proteólisis es un proceso metabólico por el cual se lleva a cabo la degradación de las proteínas de un organismo a través de enzimas específicas llamadas proteasas. En plantas, este complejo proceso comprende un …