Euphytica (2017) 213 (6 - 124)

Haiyang Li, Qilin Wang, Liangsheng Xu, Jingmei Mu, Jianhui Wu, Qingdong Zeng, Shizhou Yu, Lili Huang, Dejun Han and Zhensheng Kang (2017)
Rapid identification of a major effect QTL conferring adult plant resistance to stripe rust in wheat cultivar Yaco"S"
Euphytica 213 (6 - 124)
Abstract: Stripe rust is a devastating disease in common wheat (Triticum aestivum) worldwide. Growing cultivars with adult-plant resistance (APR) is an environmental friendly approach that provides long-term protection to wheat from this disease. Wheat cultivar Yaco"S" showed a high level of APR to stripe rust in the field from 2008 to 2014. The objective of this study was to detect the major quantitative trait loci (QTL) for APR to stripe rust in Yaco"S". One hundred and eighty-four F2:3 lines were developed from a cross between Yaco"S" and susceptible cultivar Mingxian169. Illumina 90K and 660K single nucleotide polymorphism (SNP) chips were implemented to bulked pools and their parents to identify SNPs associated with the major QTL. A high-density linkage map was constructed using simple sequence repeat (SSR) and SNP markers. Inclusive composite interval mapping detected a major effect QTL Qyryac.nwafu-2BSconferring stable resistance to stripe rust in all tested environments. Qyryac.nwafu-2BS weremapped to a 1.3 cm interval and explained 17.3–51.9% of the phenotypic variation. Compared with stripe rust resistance genes previously mapped to chromosome 2B, Qyryac.nwafu-2BS islikely a new APR gene to stripe rust. Combining SNP iSelect assay and kompetitive allele specific PCR technology, we found that the APR gene could be rapidly and accurately mapped and it is useful for improving stripe rust resistance in wheat breeding.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Zhen Sheng Kang

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Puccinia striiformis	Wheat (Triticum)