数字农科院2.0

Identification of quantitative trait loci associated with tolerance to low potassium and related ions concentrations at seedling stage in rice (Oryza sativa L.)

文献类型： 外文期刊

作者： Fang, Yunxia;Fang, Yunxia;Zhang, Xiaoqin;Lu, Wenyi;Pan, Jiangjie;Xue, Dawei;Wu, Weiming;Hu, Jiang;Guo, Longbiao;Zeng, Dali;Xue, Dawei;Jiang, Hua

作者机构：

关键词： Rice;QTL;Low potassium stress;Ions concentrations

期刊名称： PLANT GROWTH REGULATION

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年卷期：

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收录情况： SCI

摘要： Potassium (K) is one of the essential macronutrients of rice growth and eventually affects yields. To investigate the genetics of low K tolerance and related ions concentrations at the seedling stage in rice, quantitative trait loci (QTLs) were detected using a doubled haploid population derived from a cross between a japonica cultivar CJ06 and an indica accession TN1. A total of 96 QTLs were identified with phenotypic variation 5-29 %, including 30 QTLs found to be associated with shoot height, root length, shoot dry weight, root dry weight and total dry weight under the control (40 mg L-1 K+) and low K stress conditions (4 mg L-1 K+), 14 putative QTLs associated with the K tolerance coefficient of all examined traits and synthetic appraisal index, and 52 QTLs controlling four ions (Na+, K+, Ca2+ and Mg2+) concentrations of root and shoot under two treatments. The results indicated that low K tolerance and related ions concentrations were quantitatively inherited, and the detected major QTLs may be useful for marker-assistant selection.

分类号： S311

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