您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Mapping QTLs for Stripe Rust Resistance and Agronomic Traits in Chinese Winter Wheat Lantian 31 Using 15K SNP Array

文献类型： 外文期刊

作者： Li, Xin 1 ; Tan, Wenjing 1 ; Feng, Junming 1 ; Yan, Qiong 1 ; Tian, Ran 1 ; Chen, Qilin 1 ; Li, Qin 2 ; Zhong, Shengfu 3 ; Yang, Suizhuang 1 ; Xia, Chongjing 4 ; Zhou, Xinli 1 ;

作者机构： 1.Southwest Univ Sci & Technol, Wheat Res Inst, Sch Life Sci & Engn, Mianyang 621010, Peoples R China

2.Chongqing Ind & Trade Polytech, Dept Biol & Chem, Chongqing 408000, Peoples R China

3.Sichuan Agr Univ, Sichuan Agr Univ Sichuan Prov, Key Lab Plant Genet & Breeding, Chengdu 611130, Peoples R China

4.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing 100193, Peoples R China

关键词： adult-plant resistance (APR); all-stage resistance (ASR); genetic map; interval composite interval mapping (ICIM); recombinant inbred line (RIL)

期刊名称：AGRICULTURE-BASEL （ 影响因子：3.6； 五年影响因子：3.8 ）

ISSN：

年卷期： 2025 年 15 卷 13 期

页码：

收录情况： SCI

摘要： Wheat stripe rust (Puccinia striiformis f. sp. tritici, Pst) resistance and agronomic traits are crucial determinants of wheat yield. Elucidating the quantitative trait loci (QTLs) associated with these essential traits can furnish valuable genetic resources for improving both the yield potential and disease resistance in wheat. Lantian 31 is an excellent Chinese winter wheat cultivar; multi-environment phenotyping across three ecological regions (2022-2024) confirmed stable adult-plant resistance (IT 1-2; DS < 30%) against predominant Chinese Pst races (CYR31-CYR34), alongside superior thousand-kernel weight (TKW) and kernel morphology. Here, we dissected the genetic architecture of these traits using a total of 234 recombinant inbred lines (RILs) derived from a cross between Lantian 31 and the susceptible cultivar Avocet S (AvS). Genotyping with a 15K SNP array, complemented by 660K SNP-derived KASP and SSR markers, identified four stable QTLs for stripe rust resistance (QYrlt.swust-1B, -1D, -2D, -6B) and eight QTLs governing plant height (PH), spike length (SL), and kernel traits. Notably, QYrlt.swust-1B (1BL; 29.9% phenotypic variance) likely represents the pleiotropic Yr29/Lr46 locus, while QYrlt.swust-1D (1DL; 22.9% variance) is the first reported APR locus on chromosome 1DL. A pleiotropic cluster on 1B (670.4-689.9 Mb) concurrently enhanced the TKW and the kernel width and area, demonstrating Lantian 31's dual utility as a resistance and yield donor. The integrated genotyping pipeline-combining 15K SNP discovery, 660K SNP fine-mapping, and KASP validation-precisely delimited QYrlt.swust-1B to a 1.5 Mb interval, offering a cost-effective model for QTL resolution in common wheat. This work provides breeder-friendly markers and a genetic roadmap for pyramiding durable resistance and yield traits in wheat breeding programs.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台