Tagging and mapping of rice sheath blight resistant gene
文献类型: 外文期刊
第一作者: Zhan, QC
作者: Zhan, QC;Xing, QH;Wang, ZP;Jin, DM;He, DJ;Wang, B
作者机构:
关键词: rice;sheath blight resistance;molecular markers;gene mapping
期刊名称:THEORETICAL AND APPLIED GENETICS ( 影响因子:5.699; 五年影响因子:5.565 )
ISSN: 0040-5752
年卷期: 2003 年 106 卷 2 期
页码:
收录情况: SCI
摘要: Sheath blight (Rhizoctonia solani Kuhn) is one of the severe rice diseases worldwide. In this study, an F-2 population from a cross between '4011' and 'Xiangzaoxian19' is used to identify molecular markers linked with the resistant trait. '4011' was a transgenic rice cultivar carrying a resistant gene to sheath blight, while 'Xiangzaoxian19' is a highly susceptible one. As a result, five molecular markers, including three RFLP markers converted from RAPD and AFLP markers, and two SSR markers were identified to link with the sheath blight resistant gene. This dominant resistant gene was named as Rsb 1 and mapped on rice chromosome 5. The linkage distance between the markers (E-AT:M-CAC(120), E-AT:M-CTA(230), OPN-16(2000), RM164(320) and RM39(300)) and Rsb 1 was 1.6 cM, 9.9 cM, 1.6 cM, 15.2 cM and 1.6 cM, respectively.
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