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Combined linkage and association mapping reveals two major QTL for stripe rust adult plant resistance in Shaanmai 155 and their haplotype variation in common wheat germplasm

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The Crop Journal 2022年第3期10卷 783-792页

作者： Cai’e Zhou Dan Liu Xu Zhang Qimeng Wu Shengjie Liu Qingdong Zeng Qilin Wang Changfa Wang Chunlian Li Ravi PSingh Sridhar Bhavani Zhensheng Kang Dejun Han Weijun Zheng Jianhui Wu State Key Laboratory of Crop Stress Biology for Arid Areas College of AgronomyNorthwest A&F UniversityYangling 712100ShaanxiChina State Key Laboratory of Crop Stress Biology for Arid Areas College of Plant ProtectionNorthwest A&F UniversityYangling 712100ShaanxiChina International Maize and Wheat Improvement Center(CIMMYT) El BatanTexcocoEstado de Mexico 56237Mexico

The development and deployment of diverse resistance sources in new wheat cultivars underpin the durable control of stripe *** the present study,two loci for adult plant resistance(APR),qyr sm155.1 and qyr sm155.2,were identified in the Chinese wheat breeding line Shaanmai *** sm155.1 was mapped to a 3.0-c M interval between the single-nucleotide polymorphism(SNP)markers AX-109583610 and AX-110907562 on chromosome arm 2 *** sm155.2 was mapped to a 2.1-c M interval flanked by the SNP markers AX-110378556 and AX-86173526 on chromosome arm 7 AS.A genome-wide association study was used to identify markers associated with APR in a panel of 411 spring wheat *** and 11 SNPs were significantly associated with qyr sm155.1 and qyr sm155.2,respectively,corresponding to physical intervals of 653.75–655.52 Mb on 2 BL and 81.63–83.93 Mb on7 *** characterize the haplotype variation and the distribution of these QTL,haplotype analysis was performed based on these SNPs in an independent panel of 1101 worldwide wheat *** major haplotypes(2 B_h1,2 B_h2,and 2 B_h3)for qyr sm155.1 and four major haplotypes(7 A_h1,7 A_h2,7 A_h3,and 7 A_h4)for qyr sm155.2 were *** individually harboring qyr sm155.1_h1 and qyr sm155.2_h1 haplotypes and their combination displayed *** assays of 1306 current Chinese cultivars and breeding lines using markers flanking qyr sm155.1 and qyr sm155.2 indicated that the resistance haplotypes of the two QTL were present in respectively 1.45%and 14.16%of *** resistance haplotype frequencies at these two loci using marker-assisted selection should benefit wheat production in China.

关键词： Linkage and association mapping Stripe rust resistance qyr sm155.1 qyr sm155.2 Haplotype variation

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