A new secondary reciprocal translocation discovered in Chinese wheat |
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| Authors: | ZJ Qi PD Chen DJ Liu QQ Li |
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| Institution: | (1) State Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University, Nanjing, 210095, P.R. China;(2) Department of Agronomy, Shandong Agricultural University, Taian, 271018, P.R. China |
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| Abstract: | A new wheat-rye secondary reciprocal translocation involving T1RS·7DL and T7DS·1BL was detected by chromosome C-banding and genomic in situ hybridization (GISH). The meiotic configuration analysis combined with C-banding and GISH on F1 hybrids of this newly discovered translocation with T1RS·1BL and Chinese Spring Dt7DS indicated that the new translocation probably resulted from a secondary reciprocal translocation between the primary translocation T1RS·1BL and 7D in the progenies of Aifeng3//Mengxian201/Neuzucht. On the basis of the cytological analysis of progenies and recombinant inbred lines (RILs) (derived from a cross between T1RS·7DL, T7DS·1BL and T1RS·1BL), the translocation chromosomes T1RS·7DL and T7DS·1BL transmitted readily, and appeared in most of the progenies. |
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| Keywords: | C-banding genomic in situ hybridization meiotic configuration analysis Triticum aestivum wheat-rye translocation |
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