Identification of genetic loci for grain yield-related traits in the wheat population Zhongmai 578/Jimai 22

文献类型： 外文期刊

第一作者： Liu, Dan

作者： Liu, Dan;Zhao, De-hui;Zeng, Jian-qi;Shawai, Rabiu Sani;Tong, Jing-yang;Li, Ming;Li, Fa-ji;Xia, Xian-chun;Tian, Yu-bing;Wang, De-sen;He, Zhong-hu;Liu, Jin-dong;Zhang, Yong;Zhao, De-hui;Wang, Chun-ping;Shawai, Rabiu Sani;Li, Fa-ji;Zhou, Shuo;Hu, Wen-li;Zhu, Qian;He, Zhong-hu;Liu, Jin-dong

作者机构：

关键词： grain yield; KASP marker; QTL mapping; SNP chip

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.8； 五年影响因子：4.8 ）

ISSN： 2095-3119

年卷期： 2023 年 22 卷 7 期

页码：

收录情况： SCI

摘要： The identification of stable quantitative trait locus (QTL) for yield-related traits and tightly linked molecular markers is important for improving wheat grain yield. In the present study, six yield-related traits in a recombinant inbred line (RIL) population derived from the Zhongmai 578/Jimai 22 cross were phenotyped in five environments. The parents and 262 RILs were genotyped using the wheat 50K single nucleotide polymorphism (SNP) array. A high-density genetic map was constructed with 1 501 non-redundant bin markers, spanning 2 384.95 cM. Fifty-three QTLs for six yield-related traits were mapped on chromosomes 1D (2), 2A (9), 2B (6), 2D, 3A (2), 3B (2), 4A (5), 4D, 5B (8), 5D (2), 7A (7), 7B (3) and 7D (5), which explained 2.7-25.5% of the phenotypic variances. Among the 53 QTLs, 23 were detected in at least three environments, including seven for thousand-kernel weight (TKW), four for kernel length (KL), four for kernel width (KW), three for average grain filling rate (GFR), one for kernel number per spike (KNS) and four for plant height (PH). The stable QTLs QKl.caas-2A.1, QKl.caas-7D, QKw.caas-7D, QGfr.caas-2B.1, QGfr.caas-4A, QGfr.caas-7A and QPh. caas-2A.1 are likely to be new loci. Six QTL-rich regions on 2A, 2B, 4A, 5B, 7A and 7D, showed pleiotropic effects on various yield traits. TaSus2-2B and WAPO-A1 are potential candidate genes for the pleiotropic regions on 2B and 7A, respectively. The pleiotropic QTL on 7D for TKW, KL, KW and PH was verified in a natural population. The results of this study enrich our knowledge of the genetic basis underlying yield-related traits and provide molecular markers for high-yield wheat breeding.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序