Unreduced gamete formation in plants: mechanisms and prospects
نویسندگان
چکیده
منابع مشابه
Unreduced gamete formation in plants: mechanisms and prospects.
Polyploids, organisms with more than two sets of chromosomes, are widespread in flowering plants, including many important crop species. Increases in ploidy level are believed to arise commonly through the production of gametes that have not had their ploidy level reduced during meiosis. Although there have been cytological descriptions of unreduced gamete formation in a number of plants, until...
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Formation of unreduced pollen in Arabidopsis thaliana.
Sexual polyploidization, as a result of 2n gamete formation, is thought to be the main process involved in the origin of polyploid plants (Bretagnolle & Thompson, 1995). These gametes, possessing the somatic rather than the gametophytic chromosome number, can be formed either during microsporogenesis (2n pollen, big pollen, diplandroidy) or megasporogenesis (2n eggs, diplogynoecy). In general, ...
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ژورنال
عنوان ژورنال: Journal of Experimental Botany
سال: 2010
ISSN: 0022-0957,1460-2431
DOI: 10.1093/jxb/erq371