Major and stably expressed QTL for traits related to the mature wheat embryo independent of kernel size

文献类型： 外文期刊

第一作者： Wang, Surong

作者： Wang, Surong;Xuan, Qijing;Qu, Xiangru;Xu, Qiang;Jiang, Qiantao;Jiang, Yunfeng;Chen, Guoyue;Deng, Mei;Liu, Yanling;Tang, Huaping;Wei, Yuming;Zheng, Youliang;Ma, Jian;Wang, Surong;Xuan, Qijing;Qu, Xiangru;Xu, Qiang;Jiang, Qiantao;Jiang, Yunfeng;Chen, Guoyue;Deng, Mei;Liu, Yanling;Tang, Huaping;Wei, Yuming;Zheng, Youliang;Ma, Jian;Wang, Tianyu;Pu, Zhien;Li, Yang;Gou, Lulu;Chen, Guangdeng;He, Yuanjiang

作者机构：

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.4； 五年影响因子：5.7 ）

ISSN： 0040-5752

年卷期： 2023 年 136 卷 4 期

页码：

收录情况： SCI

摘要： Key MessageTwo major and stably expressed QTL for traits related to mature wheat embryo independent of kernel size were identified and validated in a natural population that contained 171 Sichuan wheat accessions and 49 Sichuan wheat landraces.As the juvenile of a highly differentiated plant, mature wheat (Triticum aestivum L.) embryos are highly significant to agricultural production. To understand the genetic basis of traits related to wheat embryo size, the embryo of mature kernels in a recombination inbred line that contained 126 lines from four environments was measured. The genetic loci of embryo size, including embryo length (EL), embryo width (EW), embryo area (EA), embryo length/kernel length (EL/KL), embryo width/kernel width (EW/KW), and EL/EW, were identified based on a genetic linkage map constructed based on PCR markers and the Wheat 55 K single nucleotide polymorphism (SNP) array. A total of 50 quantitative trait loci (QTL) for traits related to wheat embryo size were detected. Among them, QEL.sicau-2SY-4A for EL and QEW.sicau-2SY-7B for EW were major and stably expressed and were genetically independent of KL and KW, respectively. Their effects were further verified in a natural population that contained 171 Sichuan wheat accessions and 49 Sichuan wheat landraces. Further analysis showed that TraesCS4A02G343300 and TraesCS7B02G006800 could be candidate genes for QEL.sicau-2SY-4A and QEW.sicau-2SY-7B, respectively. In addition, significant positive correlations between EL and kernel-related traits and the 1,000-grain weight were detected. Collectively, this study broadens our understanding of the genetic basis of wheat embryo size and will be helpful for the further fine-mapping of interesting loci in the future.

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