<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Alternative cytoplasmic male sterility systems in sorghum and their utilization"^^ . "In sorghum, Stephen and Holland (1954) discovered cytoplasmic male sterility\r\n(CMS) designated as milo cytoplasm in the progenies of a cross between two\r\ncultivars, milo and combine kafi r, with milo as the female and kafi r as the male.\r\nMale-sterile plants to the extent of 25% were observed in the F2 generation of the\r\nabove cross when milo was used as female and not as male. The male-sterile\r\nsegregants from this cross produced male-sterile hybrids when crossed with the\r\nkafi r parent and fully fertile hybrids when crossed with the milo parent. Thus, it was\r\nrecognized that kafi r could be used as a maintainer of this source of CMS. Since\r\nthe progeny received the cytoplasm from the female, it was hypothesized that the\r\nmilo parent had a male sterility-inducing cytoplasm and dominant genes for pollen\r\nfertility, whereas the combine kafi r parent contained a normal (fertile) cytoplasm\r\nbut the recessive male-sterile genes. All progenies of the milo×combine kafi r cross\r\ncontained milo (sterility-inducing) cytoplasm, but those that also inherited the\r\nhomozygous recessive genes from the kafi r parent were male-sterile. The malesterile\r\nplants in the milo×combine kafi r cross were used as females in repeated\r\nbackcrossing with kafi r as the male parent. At the end of seven backcrosses, the\r\nentire genome of kafi r was transferred into the milo cytoplasm. This resulted in\r\ntwo morphologically similar versions of the combine kafi r (CK 60) parent: a malesterile\r\ncombine kafi r (CK 60A) and a male-fertile combine kafi r (CK 60B). The\r\nmale-sterile lines are designated as A-lines and their maintainer lines as B-lines.\r\nSubsequently, several sources of CMS systems (A1, A2, A3, A4, A5 and A6) (Table\r\n13) were discovered."^^ . "2008" . . . "International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502 324, Andhra Pradesh, India"^^ . . "International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502 324, Andhra Pradesh, India"^^ . . . "Sorghum improvement in the new millennium"^^ . . . . . . . . . . . . . . "B V S"^^ . "Reddy"^^ . "B V S Reddy"^^ . . "A"^^ . "Ashok Kumar"^^ . "A Ashok Kumar"^^ . . "S L"^^ . "Kaul"^^ . "S L Kaul"^^ . . . . . . "Alternative cytoplasmic male sterility systems in sorghum and their utilization (PDF)"^^ . . . . . . . . . . . "Alternative_cytoplasmic_male_sterility_systems_in_sorghum_and_their_utilization.pdf"^^ . . . "Alternative cytoplasmic male sterility systems in sorghum and their utilization (Image (JPEG))"^^ . . . . . . "Alternative cytoplasmic male sterility systems in sorghum and their utilization (Indexer Terms)"^^ . . . . . "HTML Summary of #4328 \n\nAlternative cytoplasmic male sterility systems in sorghum and their utilization\n\n" . "text/html" . . . "Sorghum"@en . .