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Screening and mapping for head blast resistance in a panel of CIMMYT and South Asian bread wheat germplasm

Creator: Xinyao He
Creator: Juliana, P.
Creator: Kabir, M.R.
Creator: Roy, K.K.
Creator: Islam, R.
Creator: Marza, F.
Creator: Peterson, G.L.
Creator: Singh, G.P.
Creator: Chawade, A.
Creator: Joshi, A.K.
Creator: Singh, R.P.
Creator: Singh, P.K.
Year: 2021
URI: https://hdl.handle.net/10883/21506
Language: English
Publisher: Frontiers
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: Switzerland
Volume: 12
DOI: 10.3389/fgene.2021.679162
Keywords: GWAS
Keywords: Resistance Screening
Keywords: Magnaporthe oryzae
Description: Wheat blast (WB) is a destructive disease in South America and its first outbreak in Bangladesh in 2016 posed a great risk to food security of South Asian countries. A genome wide association study (GWAS) was conducted on a diverse panel of 184 wheat genotypes from South Asia and CIMMYT. Phenotyping was conducted in eight field experiments in Bolivia and Bangladesh and a greenhouse experiment in the United States. Genotypic data included 11,401 SNP markers of the Illumina Infinium 15K BeadChip and four additional STS markers on the 2NS/2AS translocation region. Accessions with stable WB resistance across experiments were identified, which were all 2NS carriers. Nevertheless, a dozen moderately resistant 2AS lines were identified, exhibiting big variation among experiments. Significant marker-trait associations (MTA) were detected on chromosomes 1BS, 2AS, 6BS, and 7BL; but only MTAs on 2AS at the 2NS/2AS translocation region were consistently significant across experiments. The resistant accessions identified in this study could be used in production in South Asian countries as a preemptive strategy to prevent WB outbreak.
Agrovoc: GENOMES
Agrovoc: DISEASE RESISTANCE
Agrovoc: SCREENING
Agrovoc: MAGNAPORTHE
Agrovoc: PYRICULARIA ORYZAE
Related Datasets: https://hdl.handle.net/11529/10548559
Related Datasets: https://figshare.com/collections/Screening_and_Mapping_for_Head_Blast_Resistance_in_a_Panel_of_CIMMYT_and_South_Asian_Bread_Wheat_Germplasm/5422968
ISSN: 1664-8021
Journal: Frontiers in Genetics
Article number: 679162


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

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