The Worldwide Gene Pool of G. hirsutum and its Improvement

摘要: The Gossypium genus has more than 50 species that are available to use as germplasm; 5 species, including G. hirsutum, allotetraploids while the rest diploid species. 7 races of hirsutum directly usable a germplasm resource with photoperiodism main barrier. sister tetraploids require further effort be utilized for improvement due segregational breakdown. Utilizing from diploids generally requires extreme methods such chromosome doubling and bridging phenotypic consequences domestication Upland cotton, similar syndrome is common many crop plants. genetic reflected by very low level diversity found in cultivars. In continuing developmental breeding programs quickly becoming absolutely imperative provide needed intrinsic solutions needs producers, processors, consumers.