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Genome-wide mapping and allelic fingerprinting provide insights into the genetics of resistance to wheat stripe rust in India, Kenya and Mexico

Author: Juliana, P.
Author: Singh, R.P.
Author: Huerta-Espino, J.
Author: Bhavani, S.
Author: Randhawa, M.S.
Author: Kumar, U.
Author: Joshi, A.K.
Author: Bhati, P.K.
Author: Villaseñor Mir, H.E.
Author: Mishra, C.N.
Author: Singh, G.P.
Year: 2020
ISSN: 2045-2322 (Print)
URI: https://hdl.handle.net/10883/20918
Format: PDF
Language: English
Publisher: Nature Publishing Group
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Place of Publication: London (United Kingdom)
Pages: art.10908
Issue: 1
Issue: art. 10908
Volume: 10
Volume: 10
DOI: 10.1038/s41598-020-67874-x
Description: Stripe or yellow rust (YR) caused by Puccinia striiformis Westend. f. sp. tritici Erikss. is a persistent biotic-stress threatening global wheat production. To broaden our understanding of the shared genetic basis of YR resistance across multi-site and multi-year evaluations, we performed a large genome-wide association study using 43,706 YR observations on 23,346 wheat lines from the International Maize and Wheat Improvement Center evaluated between 2013 and 2019 at sites in India, Kenya and Mexico, against predominant races prevalent in the countries.We identified 114 repeatable markers tagging 20 quantitative trait loci (QTL) associated with YR on ten chromosomes including 1D, 2A, 2B, 2D, 3A, 4A, 4D, 5A, 5B and 6B, among which four QTL, QYr.cim-2DL.2, QYr.cim-2AS.1, QYr.cim-2BS.2 and QYr.cim-2BS.3 were significant in more than ten datasets.Furthermore, we report YR-associated allelic fingerprints for the largest panel of wheat breeding lines (52,067 lines) till date, creating substantial opportunities for YR favorable allele enrichment using molecular markers. Overall, the markers and fingerprints reported in this study provide excellent insights into the genetic architecture of YR resistance in different geographical regions, time-periods and wheat germplasm and are a huge resource to the global wheat breeding community for accelerating YR resistance breeding efforts.
Country of Focus: INDIA
Country of Focus: KENYA
Country of Focus: MEXICO
Agrovoc: PLANT GENETICS
Agrovoc: GENETIC MARKERS
Agrovoc: GENOMICS
Agrovoc: PLANT BREEDING
Related Datasets: https://www.nature.com/articles/s41598-020-67874-x#Sec22
Journal: Nature Scientific Reports


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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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