Pedigree-based genetic dissection of quantitative loci for seed quality and yield characters in improved soybean

文献类型： 外文期刊

第一作者： Huang, Wenxuan

作者： Huang, Wenxuan;Hou, Jingjing;Hu, Quan;An, Jie;Han, Qi;Wu, Yueying;Sun, Lianjun;Huang, Wenxuan;Hou, Jingjing;Hu, Quan;An, Jie;Han, Qi;Wu, Yueying;Sun, Lianjun;Huang, Wenxuan;Hou, Jingjing;Hu, Quan;An, Jie;Han, Qi;Li, Xuhui;Wu, Yueying;Wang, Jianhua;Li, Li;Sun, Lianjun;Zhang, Yanwei;Xu, Ran;Li, Xuhui;Zhang, Dajian

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关键词： QTL mapping; Diversity; Protein content; Oil content; Protein plus oil content; 100-seed weight

期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）

ISSN： 1380-3743

年卷期： 2021 年 41 卷 2 期

页码：

收录情况： SCI

摘要： As soybean plays an indispensable role in the supply of vegetable oil and protein, balancing the relationship between seed quality and yield traits according to human demand has become an important breeding goal for soybean improvement. Here, 256 intraspecific recombinant inbred lines (RILs), derived from a cross between Qi Huang No.34 (QH34) and Ji Dou No.17 (JD17), were used for quantitative trait loci (QTLs) mapping with remarkable four chemical and physical properties with a purpose for exploring the distribution of excellent alleles in germplasm resources in China. A total of 25 QTLs were detected, of which 10 QTLs inherited the alleles from the parent QH34. Pedigree research on favorable alleles on these QTLs showed the process of excellent alleles pyramided into QH34. Meta-analysis of the 25 QTLs by comparing with existed QTLs in previous study identified 17 novel QTLs. QTLs with pleiotropic effects have been detected. Furthermore, three representative elite recombinant inbred lines in different locations that have great potential in soybean breeding were selected, and finally, four seed weight-related candidate genes were identified. The discovery of these QTLs provides a new guidance for combining the diversity and rarity of germplasm resources, which can effectively increase population genetic diversity and broaden genetic basis of varieties.

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