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 1 ; Wu, Weiming 3 ; Zhang, Xiaoqin 2 ; Jiang, Hua 4 ; Lu, Wenyi 2 ; Pan, Jiangjie 2 ; Hu, Jiang 3 ; Guo, Lon 1 ;
作者机构： 1.Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310058, Zhejiang, Peoples R China
2.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 310036, Zhejiang, Peoples R China
3.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Zhejiang, Peoples R China
4.Zhejian
关键词： Rice;QTL;Low potassium stress;Ions concentrations
期刊名称：PLANT GROWTH REGULATION （ 影响因子：3.412； 五年影响因子：3.691 ）
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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.
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