晋麦47和晋麦84中染色体结构变异的遗传效应研究

doi:10.1016/j.jia.2024.07.047

Journal of Integrative Agriculture ›› 2026, Vol. 25 ›› Issue (3): 864-878.DOI: 10.1016/j.jia.2024.07.047

晋麦47和晋麦84中染色体结构变异的遗传效应研究

收稿日期:2024-02-29 修回日期:2024-08-01 接受日期:2024-06-21 出版日期:2026-03-20 发布日期:2026-02-06

Structural chromosome variations from Jinmai 47 and Jinmai 84 affected agronomic traits and drought tolerance of wheat

Shuwei Zhang^1*, Jiajia Zhao^2*, Haiyan Zhang¹, Duoduo Fu¹, Ling Qiao², Bangbang Wu², Xiaohua Li², Yuqiong Hao², Xingwei Zheng², Zhen Liang³, Zhijian Chang^1#, Jun Zheng^2#

¹College of Agriculture, Shanxi Agricultural University/Key Laboratory of Sustainable Dryland Agriculture (coconstruction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Taigu 030801, China
²Institute of Wheat Research, Shanxi Agricultural University, Linfen 041000, China
³College of Life Sciences, Shanxi University, Taiyuan 030006, China

Received:2024-02-29 Revised:2024-08-01 Accepted:2024-06-21 Online:2026-03-20 Published:2026-02-06
About author:Shuwei Zhang, E-mail: zshuwei@sxau.edu.cn; Jiajia Zhao, E-mail: jjzh1990@163.com; #Correspondence Zhijian Chang, E-mail: wrczj@126.com; Jun Zheng, Mobile: +86-18835712419, E-mail: sxnkyzj@126.com * These authors contributed equally to this study.
Supported by:
This project was supported by the Science and Technology Major Project of Shanxi Province, China (202201140601025-2, 202302140601001), the Agricultural Science Research Project of Shanxi Agricultural University, China (2023BQ108), the Senior Foreign Experts Introducing Project, China (G202204011L), and the Science and Technology Innovation Young Talent Team of Shanxi Province, China (202204051001019).

摘要/Abstract

摘要：

结构变异是小麦遗传变异的重要基础，在小麦基因组进化中发挥着重要作用。关于结构变异对表型和抗旱性的效应报道较少。本研究利用荧光原位杂交技术鉴定了晋麦47、晋麦84及构建的DH群体和回交导入系(BC₅F₃)的染色体结构变异(SCVs)。结果表明：晋麦47和晋麦84间存在一个简单易位，10个PAVs和一个CNV变异，分布在10条染色体上。其中8个SCVs与15个农艺性状相关联；在DH群体中发现2A染色体上存在PAVs重组类型，该类型显著影响穗粒数。1BL/1RS易位和PAV.2D分别通过降低LI2-LI4和UI, LI2-LI4以降低株高，1BL/1RS还显著增加小穗数、粒长和粒厚，PAV.2D则显著增加穗粒数(3.13%)。另外，PAV.4A.1与GL, PAV.6A与SL和TGW,以及PAV.6B对SL, GT和TGW的效应也得到了验证。对于抗旱性方面，PAV.2A, PAV.6A, PAV.1D, PAV.2D和CNV.4B与抗旱系数显著关联。各结构变异间存在加性和交互作用。值得注意的是，在PAV.2B, PAV.2D,和CNV.4B多态区域检测到与产量性状相关的基因和QTL位点。总之，本研究证实了SCV在小麦农艺性状形成和抗旱性方面的遗传效应，鉴定的SCV将为小麦进行分子标记辅助遗传改良提供依据。

Abstract:

Structural variation is an important source of genetic variation in wheat and have been important in the evolution of the wheat’s genome. Few studies have examined the relationship between structural variations and agronomy and drought tolerance. The present study identified structural chromosome variations (SCVs) in a doubled haploid (DH) population and backcross introgression lines (BC₅F₃) derived from Jinmai 47 and Jinmai 84 using fluorescence in situ hybridization (FISH). There are one simple translocation, 10 present/absent variations (PAVs), and one copy number variation (CNV) between Jinmai 47 and Jinmai 84, which distributed in 10 chromosomes. Eight SCVs were associated with 15 agronomic traits. A PAV recombination occurred on chromosome 2A, which was associated with grain number per spike (GNS). The 1BL/1RS translocation and PAV.2D were associated with significant reductions in plant height, deriving from the effects on LI2-LI4, LI2-LI4 and UI, respectively respectively. PAV.2D was also contributed to an increase of 3.13% for GNS, 1BL/1RS significantly increased spikelet number, grain length (GL), and grain thickness (GT). The effect of PAV.4A.1 on GL, PAV.6A on spike length (SL) and thousand-grain weight (TGW), PAV.6B on SL, GT and TGW were identified and verified. PAVs on chromosomes 2A, 6A, 1D, 2D, and a CNV on chromosome 4B were associated with the drought tolerance coefficients. Additive and interaction effects among SCVs were observed. Many previously cloned key genes and yield-related QTL were found in polymorphic regions of PAV.2B, PAV.2D, and CNV.4B. Altogether, this study confirmed the genetic effect of SCVs on agronomy and drought tolerance, and identification of these SCVs will facilitate genetic improvement of wheat through marker-assisted selection.

Key words: wheat , structural chromosome variation , agronomy , drought tolerance , effect

Shuwei Zhang, Jiajia Zhao, Haiyan Zhang, Duoduo Fu, Ling Qiao, Bangbang Wu, Xiaohua Li, Yuqiong Hao, Xingwei Zheng, Zhen Liang, Zhijian Chang, Jun Zheng. 晋麦47和晋麦84中染色体结构变异的遗传效应研究[J]. Journal of Integrative Agriculture, 2026, 25(3): 864-878.

Shuwei Zhang, Jiajia Zhao, Haiyan Zhang, Duoduo Fu, Ling Qiao, Bangbang Wu, Xiaohua Li, Yuqiong Hao, Xingwei Zheng, Zhen Liang, Zhijian Chang, Jun Zheng. Structural chromosome variations from Jinmai 47 and Jinmai 84 affected agronomic traits and drought tolerance of wheat[J]. Journal of Integrative Agriculture, 2026, 25(3): 864-878.

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晋麦47和晋麦84中染色体结构变异的遗传效应研究

Structural chromosome variations from Jinmai 47 and Jinmai 84 affected agronomic traits and drought tolerance of wheat

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