文献类型: 外文期刊
第一作者: Zhang, Xinmei
作者: Zhang, Xinmei;Wu, Jian;Zhang, Hui;Ma, Yuan;Wang, Xiaowu;Zhang, Xinmei;Guo, Aiguang;Ma, Yuan
作者机构:
关键词: SSR marker;male fertility;collinear genomic region
期刊名称:THEORETICAL AND APPLIED GENETICS ( 影响因子:5.699; 五年影响因子:5.565 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: A dominant male sterility (DGMS) line 79-399-3, developed from a spontaneous mutation in Brassica oleracea var. capitata, has been widely used in production of hybrid cultivars in China. In this line, male sterility is controlled by a dominant gene Ms-cd1. In the present study, fine mapping of Ms-cd1 was conducted by screening a segregating population Ms79-07 with 2,028 individuals developed by four times backcrossing using a male sterile Brassica oleracea var. italica line harboring Ms-cd1 as donor and Brassica oleracea var. alboglabra as the recipient. Bulked segregation analysis (BSA) was performed for the BC4 population Ms79-07 using 26,417 SRAP primer SRAPs and 1,300 SSRs regarding of male sterility and fertility. A high-resolution map surrounding Ms-cd1 was constructed with 14 SRAPs and one SSR. The SSR marker 8C0909 was closely linked to the MS-cd1 gene with a distance of 2.06 cM. Fourteen SRAPs closely linked to the target gene were identified; the closest ones on each side were 0.18 cM and 2.16 cM from Ms-cd1. Three of these SRAPs were successfully converted to dominant SCAR markers with a distance to the Ms-cd1 gene of 0.18, 0.39 and 4.23 cM, respectively. BLAST analysis with these SCAR marker sequences identified a collinear genomic region about 600 kb in scaffold 000010 on chromosomeA10 in B. rapa and on chromosome 5 in A. thaliana. These results provide additional information for map-based cloning of the Ms-cd1 gene and will be helpful for marker-assisted selection (MAS).
分类号: R394
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