Substitution mapping of QTLs for blast resistance with SSSLs in rice (Oryza sativa L.)

文献类型： 外文期刊

第一作者： Zhang, Yuexiong

作者： Zhang, Yuexiong;Shan, Zelin;Qiao, Weihua;Xie, Qingjun;Zhu, Haitao;Zhang, Zemin;Zeng, Ruizhen;Ding, Xiaohua;Zhang, Guiquan;Yang, Jianyuan;Chen, Shen;Zhu, Haitao;Zhang, Zemin;Zeng, Ruizhen;Zhang, Guiquan

作者机构：

关键词： Rice;Single-segment substitution line;Blast;Quantitative trait locus;Resistance;Substitution mapping

期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）

ISSN： 0014-2336

年卷期： 2012 年 184 卷 1 期

页码：

收录情况： SCI

摘要： Rice blast, caused by fungal pathogen Magnaporthe grisea Barr., is one of the most devastating rice diseases worldwide. It has greatly affected the rice production and quality. Development of resistant cultivars is the most effective and economical way for controlling this disease in rice. In this study, 114 of the single-segment substitution lines (SSSLs) in rice were inoculated at seedling stage by 16 rice blast isolates. The substituted segments in the 114 SSSLs distributed on 12 chromosomes with coverage of 57.32% of rice genome. Fifteen of the SSSLs were different in blast resistance from the HJX74 recipient. The SSSL W23-7-6-5-2-2 showed 100% of resistance frequency. A total of 11 QTLs for blast resistance were detected on chromosomes 1, 2, 3, 6, 10, 11 and 12 in rice. They were mapped at chromosomal intervals of 2.2-46.2 cM, of which 6 QTLs were mapped at less than 10.0 cM. Six of the 11 QTLs were first reported in this paper.

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