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当前位置: 首页 > 文章 > Identification of genetic loci for grain yield-related traits in the wheat population Zhongmai 578/Jimai 22 农业科学学报 (英文) 2023,22 (7)
Position: Home > Articles > Identification of genetic loci for grain yield-related traits in the wheat population Zhongmai 578/Jimai 22 Journal of Integrative Agriculture 2023,22 (7)

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

作  者：
Liu, Dan;Zhao, De-hui;Zeng, Jian-qi;Shawai, Rabiu Sani;Tong, Jing-yang;Li, Ming;Li, Fa-ji;Zhou, Shuo;Hu, Wen-li;Xia, Xian-chun;Tian, Yu-bing;Zhu, Qian;Wang, Chun-ping;Wang, De-sen;He, Zhong-hu;Liu, Jin-dong;Zhang, Yong
单  位：
Aliko Dangote Univ Sci & Technol Wudil, Fac Agr & Agr Technol, Dept Crop Sci, Kano 713281, Nigeria;Gaoyi Stock Seed Stn, Shijiazhuang 053110, Peoples R China;Shandong Acad Agr Sci, Crop Res Inst, Jinan 250100, Peoples R China;Chinese Acad Agr Sci CAAS, Inst Crop Sci, Natl Wheat Improvement Ctr, Beijing 100081, Peoples R China;Hebei Acad Agr & Forestry Sci, Inst Biotechnol & Food Sci, Shijiazhuang 050051, Peoples R China;Henan Univ Sci & Technol, Coll Agr, Luoyang 471000, Peoples R China;CAAS, Int Maize & Wheat Improvement Ctr CIMMYT, China Off, Beijing 100081, Peoples R China;Shangqiu Acad Agr & Forestry Sci, Shangqiu 476000, Peoples R China;Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen 518120, Peoples R China
关键词：
grain yield;KASP marker;QTL mapping;SNP chip
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.

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