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QTL mapping for field resistance to wheat blast in the Caninde#1/Alondra population

Creator: Xinyao He
Creator: Kabir, M.R.
Creator: Roy, K.K.
Creator: Anwar, M.B.
Creator: Kaijie Xu
Creator: Marza, F.
Creator: Odilbekov, F.
Creator: Chawade, A.
Creator: Duveiller, E.
Creator: Huttner, E.
Creator: Singh, P.K.
Year: 2020
Language: English
Publisher: Springer
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 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: Berlin (Germany)
Pages: 2673-2683
Issue: 9
Volume: 133
DOI: 10.1007/s00122-020-03624-x
Description: Wheat blast (WB) is a devastating disease in South America, and it recently also emerged in Bangladesh. Host resistance to WB has relied heavily on the 2NS/2AS translocation, but the responsible QTL has not been mapped and its phenotypic effects in different environments have not been reported. In the current study, a recombinant inbred line population with 298 progenies was generated, with the female and male parents being Caninde#1 (with 2NS) and Alondra (without 2NS), respectively. Phenotyping was carried out in two locations in Bolivia, namely Quirusillas and Okinawa, and one location in Bangladesh, Jashore, with two sowing dates in each of the two cropping seasons in each location, during the years 2017–2019. Genotyping was performed with the DArTseq® technology along with five previously reported STS markers in the 2NS region. QTL mapping identified a major and consistent QTL on 2NS/2AS region, explaining between 22.4 and 50.1% of the phenotypic variation in different environments. Additional QTL were detected on chromosomes 1AS, 2BL, 3AL, 4BS, 4DL and 7BS, all additive to the 2NS QTL and showing phenotypic effects less than 10%. Two codominant STS markers, WGGB156 and WGGB159, were linked proximally to the 2NS/2AS QTL with a genetic distance of 0.9 cM, being potentially useful in marker-assisted selection.
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ISSN: 0040-5752
Journal: Theoretical and Applied Genetics

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

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