Identification of quantitative trait loci for seed storability in rice (Oryza sativa L.)

文献类型： 外文期刊

第一作者： Li, Linfang

作者： Li, Linfang;Lin, Qiuyun;Liu, Shijia;Liu, Xi;Wang, Wenyan;Ngo Thi Hang;Liu, Feng;Zhao, Zhigang;Jiang, Ling;Wan, Jianmin

作者机构：

关键词： backcross inbred lines;chromosome segment substitution lines;quantitative trait locus;rice;seed storability

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

ISSN： 0179-9541

年卷期： 2012 年 131 卷 6 期

页码：

收录情况： SCI

摘要： With 5 figures and 2 tables Abstract Seed storability is an important agronomic trait for rice. A population comprising 182 backcross recombinant inbred lines derived from the backcross Koshihikari (japonica)/Kasalath (indica)//Koshihikari was used for detecting quantitative trait loci (QTL) for seed storability. Germination rate was used as the phenotype of seed storability under room temperature conditions after storage for 32 months (grown only at Nanjing) and 48 months (grown at Nanjing, Jinhu and Lianyungang). Six QTL named qSS-2, qSS-3, qSS-4, qSS-6, qSS-9 and qSS-11 were detected. qSS-9 was the most stable one and was detected in seeds from all environments and storage times, explaining 10.6333.10% of the phenotypic variation. The existence of QTL qSS-2, qSS-4, qSS-6 and qSS-9 was confirmed using Kasalath chromosome segment substitution lines in a Koshihikari genetic background. These results provide an opportunity for map-based cloning of qSS-9, thereby gaining an understanding of seed storability in rice and possibilities for its improvement.

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