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QTL Mapping for Seed Quality Traits under Multiple Environments in Soybean (Glycine max L.)

文献类型： 外文期刊

作者： Liu, Jiaqi 1 ; Jiang, Aohua 1 ; Ma, Ronghan 1 ; Gao, Weiran 1 ; Tan, Pingting 1 ; Li, Xi 1 ; Du, Chengzhang 2 ; Zhang, Jijun 2 ; Zhang, Xiaochun 2 ; Zhang, Li 3 ; Fang, Xiaomei 1 ; Yi, Zelin 1 ; Zhang, Jian 1 ;

作者机构： 1.Southwest Univ, Coll Agron & Biotechnol, Chongqing 400715, Peoples R China

2.Chongqing Acad Agr Sci, Inst Specialty Crop, Chongqing 402160, Peoples R China

3.Chongqing Three Gorges Acad Agr Sci, Chongqing 404100, Peoples R China

关键词： soybean; protein; oil; fatty acid; QTL (quantitative trait loci); candidate gene

期刊名称：AGRONOMY-BASEL （ 影响因子：3.3； 五年影响因子：3.7 ）

ISSN：

年卷期： 2023 年 13 卷 9 期

页码：

收录情况： SCI

摘要： Soybeans are the main source of vegetable protein and edible oil for humans, with an average content of about 40% crude protein and 20% crude fat. Soybean quality traits are mostly quantitative traits controlled by multiple genes. The quantitative trait loci (QTL) for soybean quality traits and mining related candidate genes are of great significance for the molecular breeding of soybean quality traits and understanding the genetic mechanism of protein/fat metabolism. In this study, the F-2 population was derived from the high-protein material Changjiang Chun 2 and Jiyu 166. On the basis of a genetic linkage map constructed in our previous study, the QTL of crude protein content, crude oil content and fatty acid fractions were detected using the multiple-QTL model (MQM) mapping method. The results show that a total of 92 QTL were obtained affecting quality traits under three environments, including 14 QTL of crude oil content, 9 QTL of crude protein content, and 20, 20, 11, 10 and 8 QTL for the content of palmitic, stearic, oleic, linoleic and linolenic acids, respectively. Sixteen QTL clusters were identified, among which Loci01.1, Loci06.1 and Loci11.1 were identified as stable QTL clusters with phenotypic contribution rates of 16.5%, 16.4% and 12.1%, respectively, and candidate genes were mined in their regions. A total of 32 candidate genes related to soybean quality were finally screened via GO enrichment and gene annotation. The present study lies the foundations for understanding the genetic mechanism and elite germplasm innovation of seed quality in soybean.

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