华北农学报 ›› 2026, Vol. 41 ›› Issue (2): 179-186. doi: 10.7668/hbnxb.20196231

所属专题: 小麦 生物技术

• 资源环境·植物保护 • 上一篇    下一篇

普通小麦KU3067和Apav分离群体抗叶锈基因定位

徐浩1, 董海焦2, 王炜星1, 高璞1, 王新海1, 王金硕1, 王新锐1, 李在峰1, 张培培1   

  1. 1 河北农业大学 植物保护学院, 河北 保定 071001
    2 河北农业大学 华北作物改良与调控国家重点实验室, 河北 保定 071001
  • 收稿日期:2025-06-20 出版日期:2026-04-28
  • 通讯作者:
    张培培(1990—),女,河北保定人,副教授,博士,博士生导师,主要从事分子植物病理学研究。
  • 作者简介:

    徐 浩(2000—),男,河北衡水人,硕士,主要从事分子植物病理学研究。

  • 基金资助:
    国家自然科学基金项目(32001538); 国家自然科学基金项目(32372111); 河北省高等学校科学研究项目(BJ2025101)

Gene Mapping for Leaf Rust Resistance in the Segregating Population of Common Wheat KU3067 and Apav

XU Hao1, DONG Haijiao2, WANG Weixing1, GAO Pu1, WANG Xinhai1, WANG Jinshuo1, WANG Xinrui1, LI Zaifeng1, ZHANG Peipei1   

  1. 1 College of Plant Protection, Hebei Agricultural University, Baoding 071001, China
    2 State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding 071001, China
  • Received:2025-06-20 Published:2026-04-28

摘要:

发掘并定位小麦品种中携带的抗病基因能为小麦新品种选育提供抗源、基因及标记。以阿富汗小麦地方品种KU3067及Apav构建的BC1F5群体为材料,在河北保定环境进行苗期和成株期抗叶锈性鉴定,并开展抗病基因定位研究。苗期鉴定结果显示,KU3067对3个供试叶锈菌生理小种表现为高感,Apav表现为高抗,148个BC1F5群体植株的抗感分离比符合1对基因的遗传模式,分子标记分析证实Apav中的基因为已知抗叶锈基因Lr13。成株期鉴定结果显示,KU3067、Apav均表现为高抗,后代群体呈现连续性分布,符合数量性状的特点,结合群体的DArT-Seq数据分析共定位到5个抗叶锈数量性状位点(QTL)。来自Apav的Lr13在2个环境中检测到,分别解释了51.60%,25.08%的表型变异;Lr67来自KU3067,解释了4.98%~7.30%的表型变异;来自Apav的QLr.hebau-2AS解释了6.68%的表型变异,可能为新的位点;来自Apav的QLr.hebau-5DL.1和来自KU3067的QLr.hebau-5DL.2分别解释了23.74%,8.41%的表型变异,均推测为新位点。明确了KU3067/Apav群体在保定环境下的抗性表现特征,定位了包括Lr13Lr67以及3个潜在新抗叶锈QTL,并开发了紧密连锁的分子标记,为我国小麦抗叶锈病育种提供了重要的基因资源和标记。

关键词: 小麦叶锈病, QTL定位, 分子标记, 遗传分析

Abstract:

Discovery and mapping of disease-resistant genes in wheat varieties can provide resistance sources,genes and markers for the breeding of new wheat cultivars.KU3067/Apav BC1F5 population were used to evaluate for leaf rust resistance at seedling and adult plant stage in Baoding,Hebei Province,and leaf rust resistance gene(s)were mapped using molecular marker technology.At the seedling stage,KU3067 was highly susceptible to three leaf rust physiological races while Apav was highly resistant.The 148 BC1F5 lines showed a separation ratio of one pair of genes,indicating that there was a dominant gene in Apav.It was confirmed that the gene was the known leaf rust resistance gene Lr13 using molecular marker technology.Both parents showed high resistance at the adult stage,and the population showed continuous distribution,which was consistent with the characteristics of quantitative traits.Combined with the DArT-Seq data of the population,five leaf rust resistance QTLs were mapped in this population.Lr13,from Apav,was detected in two environments and explained 51.60% and 25.08% of the phenotypic variance,respectively.Lr67 from KU3067 was detected in two environments,explaining 4.98%—7.30% of the phenotypic variance,respectively.QLr.hebau-2AS,from Apav,explained 6.68% of the phenotypic variance.QLr.hebau-5DL.1 from Apav,and QLr.hebau-5DL.2 from KU3067 explained 23.74% and 8.41% of the phenotypic variance,respectively,the two gene might be novel.This study clarified the resistance performance characteristics of the KU3067/Apav population in the Baoding environment,mapped multiple genetic loci including Lr13,Lr67,and three potentially novel leaf rust resistance QTLs,and developed closely linked molecular markers.This provides valuable genetic resources and markers for wheat leaf rust resistance breeding in China.

Key words: Wheat leaf rust, QTL mapping, Molecular marker, Genetic analysis

中图分类号: 

引用本文

徐浩, 董海焦, 王炜星, 高璞, 王新海, 王金硕, 王新锐, 李在峰, 张培培. 普通小麦KU3067和Apav分离群体抗叶锈基因定位[J]. 华北农学报, 2026, 41(2): 179-186. doi: 10.7668/hbnxb.20196231.

XU Hao, DONG Haijiao, WANG Weixing, GAO Pu, WANG Xinhai, WANG Jinshuo, WANG Xinrui, LI Zaifeng, ZHANG Peipei. Gene Mapping for Leaf Rust Resistance in the Segregating Population of Common Wheat KU3067 and Apav[J]. Acta Agriculturae Boreali-Sinica, 2026, 41(2): 179-186. doi: 10.7668/hbnxb.20196231.