您好，欢迎访问四川省农业科学院 机构知识库！

Identification of a dominant stripe rust resistance gene YrXY on chromosome 6R in hexaploid triticale

文献类型： 外文期刊

作者： Lin, Yu 1 ; Yang, Yahan 1 ; Gou, Yichang 1 ; Xue, Zhenzhen 1 ; Huang, Genxi 1 ; Wan, Hongshen 3 ; Wang, Zhiqiang 4 ; Huang, Lin 1 ; Kang, Houyang 1 ; Wang, Yi 1 ; Zhou, Yonghong 1 ; Zhang, Haiqin 1 ;

作者机构： 1.Sichuan Agr Univ, State Key Lab Crop Gene Explorat & Utilizat Southw, Chengdu 611130, Peoples R China

2.Sichuan Agr Univ, Coll Grassland Sci & Technol, Chengdu 611130, Peoples R China

3.Sichuan Acad Agr Sci, Key Lab Wheat Biol & Genet Improvement Southwester, Crop Res Inst, Chengdu 610066, Peoples R China

4.Chengdu Agr Coll, Chengdu 611130, Peoples R China

5.Sichuan Agr Univ, Triticeae Res Inst, Chengdu 611130, Peoples R China

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：4.2； 五年影响因子：4.9 ）

ISSN： 0040-5752

年卷期： 2025 年 138 卷 9 期

页码：

收录情况： SCI

摘要： Breeding resistant cultivars is the most effective strategy to control stripe rust in cereal crops. The hexaploid triticale line Xinyi is highly resistant to stripe rust at the seedling and adult plant stages. A segregating F2 population derived from a cross between Xinyi and the susceptible hexaploid triticale cultivar Zhongsi1048 was assessed to understand the genetic architecture of stripe rust resistance. Genetic analysis revealed that an all-stage resistance in Xinyi, temporarily designated YrXY, was caused by a single dominant gene. Based on bulked segregant RNA sequence (BSR-seq) analysis, YrXY was identified at 868.82-883.98 Mb on chromosome 6R. By constructing a genetic map based on newly developed KASP markers, the YRXY locus was reconfirmed and narrowed to a 1.4 cM genetic interval, correspondingly to a 2.03 Mb genomic interval (871.47-873.50 Mb). Thirty-two high-confidence genes were predicted in this genomic region, and the non-specific serine/threonine protein kinase gene SECCE6Rv1G0451190 was the most likely candidate gene based on sequence and expression analysis. Genotyping using KASP markers closely linked to YRXY in a segregating population (F5) derived from a cross of Xinyi and common wheat line L83 revealed that the stripe rust resistance gene YrXY was stably expressed in a wheat-triticale background. We developed a closely linked, breeder-friendly PCR marker that can be used in marker-assisted breeding for stripe rust resistance in both triticale and wheat.

  • 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：四川省农业科学院

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