QTL analysis of soybean oil content under 17 environments

文献类型： 外文期刊

第一作者： Qi, Zhaoming

作者： Qi, Zhaoming;Hou, Meng;Xin, Dawei;Wang, Zhongyu;Zhu, Rongsheng;Hu, Zhenbang;Chen, Qingshan;Han, Xue;Jiang, Hongwei;Liu, Chunyan;Hu, Guohua;Li, Candong

作者机构：

关键词： Soybean;quantitative trait loci mapping;QTLnetwork;marker-assisted selection

期刊名称：CANADIAN JOURNAL OF PLANT SCIENCE （ 影响因子：1.018； 五年影响因子：1.242 ）

ISSN： 0008-4220

年卷期： 2014 年 94 卷 2 期

页码：

收录情况： SCI

摘要： Soybean oil content is a key trait driver of successful soybean quality. Due to its complex nature, less stable quantitative trait loci (QTL) are known. The goal of this study was to identify important and stable QTL affecting soybean oil content using recombination inbred lines (RILs) derived from a cross between Charleston and Dongnong594. The plant materials were planted in three environments across 9 yr in China. The genetic effects were then partitioned into additive main effects (A), epistatic main effects (AA) and their environment interaction effects (AE and AAE) by using composite interval mapping, multiple interval mapping and composite interval mapping in a mixed linear model. Fifty-six QTL were identified on 15 of 20 soybean chromosomes excluding LG C1, D2, E, M and O by composite interval mapping and multiple interval mapping methods. Seven oil content QTL detected on LG A1, 1 on LG A2, 5 on LG B1, 4 on LG B2, 8 on LG C2, 11 on LG D1a, 2 on LG D1b, 4 on LG F, 5 on LG G, 2 on LG H, 1 on LG I, 1 on LG J, 1 on LG K, 2 on LG L and 2 on LG N. Eight QTL showed a good stability across 17 environments. The additive main-effect QTL contributed more phenotypic variation than the epistasis and environmental interaction. This indicated that it is feasible to improve soybean oil content by marker-assisted selection.

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