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Identification of the quantitative trait loci (QTL) underlying water soluble protein content in soybean

文献类型： 外文期刊

作者： Lu, Weiguo 1 ; Wen, Zixiang 1 ; Li, Haichao 1 ; Yuan, Daohua 1 ; Li, Jinying 1 ; Zhang, Hui 1 ; Huang, Zhongwen; Cui, 1 ;

作者机构： 1.Henan Acad Agr Sci, Inst Ind Crops, Zhengzhou Natl Subctr Soybean Improvement, Key Lab Oil Crops Huanghuaihai Plains,Minist Agr, Zhengzhou 450002, Henan, Peoples R China

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）

ISSN： 0040-5752

年卷期： 2013 年 126 卷 2 期

页码：

收录情况： SCI

摘要： Water soluble protein content (SPC) plays an important role in the functional efficacy of protein in food products. Therefore, for the identification of quantitative trait loci (QTL) associated with SPC, 212 F-2:9 lines of the recombinant inbred line (RIL) population derived from the cross of ZDD09454 x Yudou12 were grown along with the parents, in six different environments (location x year) to determine inheritance and map solubility-related genes. A linkage map comprising of 301 SSR markers covering 3,576.81 cM was constructed in the RIL population. Seed SPC was quantified with a macro-Kjeldahl procedure in samples collected over multiple years from three locations (Nantong in 2007 and 2008, Zhengzhou in 2007 and 2008, and Xinxiang in 2008 and 2009). SPC demonstrated transgressive segregation, indicating a complementary genetic structure between the parents. Eleven putative QTL were associated with SPC explaining 4.5-18.2 % of the observed phenotypic variation across the 6 year/location environments. Among these, two QTL (qsp8-4, qsp8-5) near GMENOD2B and Sat_215 showed an association with SPC in multiple environments, suggesting that they were key QTL related to protein solubility. The QTL x environment interaction demonstrated the complex genetic mechanism of SPC. These SPC-associated QTL and linked markers in soybean will provide important information that can be utilized by breeders to improve the functional quality of soybean varieties.

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