The Embryo Sac ofScilla PratensisWaldst. et Kit. (Liliaceae)
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چکیده
منابع مشابه
The Ovule and the Embryo Sac.
The plant life cycle is characterized by the alternation of generations between a diploid sporophyte and a haploid gametophyte. The sporophyte functions to produce spores, which then develop into gametophytes. The differentiated gametophytes in turn produce either the male gametes (sperm) or female gametes (egg cells). In contrast to lower plant species, in which the gametophyte is the dominant...
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Agave tequilana is an angiosperm species that belongs to the family Asparagaceae (formerly Agavaceae). Even though there is information regarding to some aspects related to the megagametogenesis of A. tequilana, this is the first report describing the complete process of megasporogenesis, megagametogenesis, the early embryo and endosperm development process in detail. The objective of this work...
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Lymphocyte development and ontogenetic changes in erythroid cells have been studied in chick-chick yolk-sac-embryo chimeras differing at the B locus antigens. Erythroid cells derived from the yolk sac or from the intraembryonic mesenchyme were demonstrated by indirect immunofluorescence in the peripheral blood of these allogenic chimeras. At 7 days of incubation, yolk-sac-derived red cells repr...
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The embryo sac, the female gametophyte of flowering plants, plays important roles in the pollination and fertilization process. Maize (Zea mays L.) is a model monocot, but little is known about the interactions between its embryo sac and the pollen tube. In this study, we compared the transcript profiles of mature embryo sacs, mature embryo sacs 14-16 h after pollination, and mature nucelli. Co...
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The many unusual properties of the psittacowith elementary bodies. About 48 hours after sis-lymphogranuloma group of infectious agents the host cell is infected, the vesicle bursts, have made their exact taxonomic position a ruptures the cell and releases a swarm of new matter of doubt (Rake, 1953; Meyer, 1953). elementary bodies to infect fresh cells (Weiss, However, whether these intracellula...
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ژورنال
عنوان ژورنال: Caryologia
سال: 1959
ISSN: 0008-7114,2165-5391
DOI: 10.1080/00087114.1959.10797061