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Detection of QTL for Cold Tolerance at Bud Bursting Stage Using Chromosome Segment Substitution Lines in Rice （Oryza sativa）

作者：

Jing Lin;Wei Zhu;Yadong Zhang;Zhen Zhu;Liyan Zhao;Tao Chen;Zhao QingYong;Lihui Zhou;Xianwen Fang;Yanping Wang;Cailin Wan

单位：

Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Jiangsu High Quality Rice R & D Center, Nanjing Branch of China National Center for Rice Improvement, Research Center for Protection and Utilization of Agricultural Germplasm Resource in Jiangsu Province, Nanjing 210014, Chin;Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Jiangsu High Quality Rice R & D Center, Nanjing Branch of China National Center for Rice Improvement, Research Center for Protection and Utilization of Agricultural Germplasm Resource in Jiangsu Province, Nanjing 210014, China

关键词：

chromosome segment substitution lines;cold tolerance;bud bursting stage;substitution mapping;ric

摘要：

The cold tolerance at the bud bursting stage (CTB) was evaluated at 5°C by using a set of 95 chromosome segment substitution lines (CSSLs) derived from an indica rice 9311 and a japonica rice Nipponbare with a genetic background of 9311. The result showed that six CSSLs had slightly stronger effect on CTB than 9311. Total four quantitative trait loci (QTLs) for CTB were preliminary mapped on chromosomes 5 and 7 by substitution mapping. qCTB-5-1, qCTB-5-2 and qCTB-5-3 were mapped in the region of RM267-RM1237, RM2422-RM6054 and RM3321-RM1054, which were 21.3 cM, 27.4 cM and 12.7 cM in genetic distance on rice chromosome 5, respectively. qCTB-7 was mapped in a 6.8-cM region of RM11-RM2752 on rice chromosome 7.

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Detection of QTL for Cold Tolerance at Bud Bursting Stage Using Chromosome Segment Substitution Lines in Rice （Oryza sativa）

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