Quantitative trait loci (QTLs) for potassium chlorate resistance and low temperature tolerance in seedling stage in rice (Oryza sativa L.)
Quantitative trait loci (QTLs) for potassium chlorate resistance and low temperature tolerance in seedling stage in rice (Oryza sativa L.)
复制标题
水稻苗期抗氯酸钾和耐低温的数量性状位点（QTL）（Oryza sativa L.）
DOI：
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发表时间：
2012
影响因子：
1
通讯作者：
Cai, Hongwei
中科院分区：
文献类型：
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作者：
Sun, Pei;Liu, Fengxia;Tan, Lubin;Zhu, Zuofeng;Fu, Yongcai;Sun, Chuanqing;Cai, Hongwei
利用F8重组自交系（RIL）群体，对水稻抗氯酸钾（KClO 3）和耐低温（LTT）两个重要生理性状进行了QTL定位。在15°和28°条件下，测定了处理和对照的茎长、根长、茎长与根长比值等4个抗KClO 3性状和茎长、根长、发芽率等4个LTT性状。在第2、4、7和10染色体上共检测到6个氯化钾的QTL，其中主效QTL qSLratio-2可解释40%的表型变异。另一方面，在第2和第4染色体上共检测到4个控制LTT的QTL。这些结果将有助于这两个重要性状的分子标记辅助选择。
An F8 recombinant inbred lines (RIL) population was used to identify quantitative trait loci (QTLs) for potassium chlorate (KClO3) resistance and low temperature tolerance (LTT), two key physiological traits to distinguish rice subspecies, indica and japonica. Four traits were measured for KClO3 resistance including shoot length, root length, shoot length and root length ratios of treatment and control conditions, and four traits for LTT including shoot length, root length and germination rate in 15° and 28°. A total of six QTLs were identified on chromosomes 2, 4, 7 and 10 for KClO3, including a major QTL qSLratio-2, which accounted for 40% of the phenotypic variance. On the other hand, a total of four QTLs for LTT were identified on chromosomes 2 and 4. These results will be useful in marker-assisted selections for these two important traits.