Inheritance and mapping of a restorer gene for the rapeseed cytoplasmic male sterile line 681A |
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Authors: | Z Liu C Guan F Zhao S Chen |
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Institution: | Hunan Agricultural University, Changsha, Hunan 410128, China, E-mail: zsliu48@hunau.net |
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Abstract: | A novel cytoplasmic male sterility‐fertility restoration system has been developed in rapeseed (Brassica napus). The cytoplasmic male sterile line 681A was derived from a spontaneous male sterile mutant in a newly released double‐low rapeseed cultivar ‘Xiangyou 13′. The restorer line 714R was identified in the interspecific progeny from a B. napus×B. juncea‐cross. Genetic analysis showed that fertility restoration for 681A cytoplasmic male sterility was controlled by a single dominant nuclear gene which might originate from B. juncea. The RAPD marker S1039‐520 was found to be linked to the restorer gene in F2 progeny of 681A × 714R with a recombination frequency of 5.45%. |
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Keywords: | Brassica juncea Brassica napus CMS fertility restoration molecular mapping RAPD marker |
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