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QTL mapping for adult plant resistance to wheat stripe rust in M96-5 x Guixie 3 wheat population

文献类型： 外文期刊

作者： Cheng, Bin 1 ; Gao, Xu 1 ; Cao, Ning 1 ; Ding, Yanqing 1 ; Chen, Tianqing 1 ; Zhou, Qiang 2 ; Gao, Yu 3 ; Xin, Zhihai 4 ; Zhang, Liyi 1 ;

作者机构： 1.Guizhou Acad Agr Sci, Guizhou Inst Upland Crops, Guiyang 550006, Guizhou, Peoples R China

2.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China

3.Guizhou Univ, Coll Agr, Guiyang 550025, Guizhou, Peoples R China

4.Guizhou Univ, Coll Life Sci, Guiyang 550025, Guizhou, Peoples R China

关键词： Common wheat; Puccinia striiformis f; sp; tritici (Pst); Adult plant resistance; SNP array; Linkage analysis

期刊名称：JOURNAL OF APPLIED GENETICS （ 影响因子：2.653； 五年影响因子：2.952 ）

ISSN： 1234-1983

年卷期： 2022 年 63 卷 2 期

页码：

收录情况： SCI

摘要： Development of cultivars with multiple resistances has proven to be an effective way to prevent diseases in wheat breeding. The Guixie 3 variety (GX3) has shown excellent performance in resistance to stripe rust in field for many years. The purpose of this study was to detect quantitative trait loci (QTL) associated with resistance to stripe rust in the adult plant stage and determine closely linked molecular markers. A population of recombinant inbred lines (n = 228) was derived from a cross between the susceptible landrace Mian 96-5 (M96-5) and GX3 variety and evaluated in multiple field studies, and QTL analysis enabled to elucidate genetic architecture of wheat resistance to stripe rust. A total of 19 QTL for stripe rust resistance were mapped on 12 chromosomes using phenotypic data from multiple field tests over the course of 6 years. These chromosomes included 1B (2), 1D (2), 2A (2), 2B (2), 2D (1), 4B (2), 4D (1), 5A (3), 5B (1), 6A (1), 6B (1), and 7B (1). Two stable QTL on chromosomes 2AS (Qyr.gaas.2A) and 6AL (Qyr.gaas.6A) were detected in six and five different environments, respectively; in both QTL, positive allele was contributed by GX3 variety. Qyr.gaas.2A was found to be crucial for increasing adult plant resistance, which may explain the large phenotypic variation of 45.52%. Our results provide theoretical and molecular insight for wheat breeding and suggest the cloning of genes associated with the GX3 variety may be beneficial in future studies.

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