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QTL mapping of male sterility-related traits in a photoperiod and temperature-sensitive genic male sterile wheat line BS366 |
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| Authors: | Shao-hua Yuan Jian-fang Bai Hao-yu Guo Wen-jing Duan Zi-han Liu Feng-ting Zhang Jin-xiu Ma Chang-ping Zhao Li-ping Zhang |
| Institution: | 1. Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, China;2. Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, China
The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, China College of Life Science, Capital Normal University, Beijing, China;3. Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry, Beijing, China The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, China |
| Abstract: | The photoperiod/temperature-sensitive genic male sterile (P/TGMS) character is important for use of heterosis in hybrid wheat. In the present study, the fertility of 172 doubled haploid (DH) lines derived from the cross between a P/TGMS wheat line BS366 and a restorer wheat line Baiyu149 was investigated under both fertile and sterile environments during three cropping seasons. The phenotype was recorded based on the international seed setting rate. A total of 167 SSR and 1,278 SNP markers were used to construct a linkage map, with a total length of 3,748.94 cM and an average marker interval of 2.59 cM. Three QTLs were identified and designated as QF.bhw-2DS, QF.bhw-4BS and QF.bhw-7Al, explaining 6.9%–12.8%, 19.7%–25.6% and 7.2%–8.8% of the phenotypic variances, respectively. These results lay a good basis for application of male sterility-related molecular markers in improvement of two-line hybrid wheat breeding system. |
| Keywords: | gene mapping hybrid wheat male sterility molecular markers |