Improvement of three popular Indian groundnut varieties for foliar disease resistance and high oleic acid using SSR markers and SNP array in marker-assisted backcrossing

    Shasidhar, Y and Variath, M T and Vishwakarma, M K and Manohar, S S and Gangurde, S S and Sriswathi, M and Sudini, H and Dobariya, K L and Bera, S K and Radhakrishnan, T and Pandey, M K and Janila, P and Varshney, R K (2020) Improvement of three popular Indian groundnut varieties for foliar disease resistance and high oleic acid using SSR markers and SNP array in marker-assisted backcrossing. The Crop Journal (TSI), 8 (1). pp. 1-15. ISSN 22145141

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    Abstract

    Foliar fungal diseases (rust and late leaf spot) incur large yield losses, in addition to the deterioration of fodder quality in groundnut worldwide. High oleic acid has emerged as a key market trait in groundnut, as it increases the shelf life of the produce/products in addition to providing health benefits to consumers. Marker-assisted backcrossing (MABC) is the most successful approach to introgressing or pyramiding one or more traits using traitlinked markers. We used MABC to improve three popular Indian cultivars (GJG 9, GG 20, and GJGHPS 1) for foliar disease resistance (FDR) and high oleic acid content. A total of 22 BC3F4 and 30 BC2F4 introgression lines (ILs) for FDR and 46 BC3F4 and 41 BC2F4 ILs for high oleic acid were developed. Recurrent parent genome analysis using the 58 K Axiom_Arachis array identified several lines showing upto 94% of genome recovery among second and third backcross progenies. Phenotyping of these ILs revealed FDR scores comparable to the resistant parent, GPBD 4, and ILs with high (~80%) oleic acid in addition to high genome recovery. These ILs provide further opportunities for pyramiding FDR and high oleic acid in all three genetic backgrounds as well as for conducting multi-location yield trials for further evaluation and release for cultivation in target regions of India.

    Item Type: Article
    Divisions: Research Program : Asia
    Research Program : Genetic Gains
    CRP: CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC)
    Uncontrolled Keywords: Foliar disease resistance, High oleic acid, Late leaf spot, Marker-assisted backcrossing, SNP array, Background genome, Recovery
    Subjects: Mandate crops > Groundnut
    Others > Genetics and Genomics
    Others > Plant Disease
    Others > Legume Crops
    Depositing User: Mr Arun S
    Date Deposited: 24 Feb 2020 08:48
    Last Modified: 18 May 2020 11:41
    URI: http://oar.icrisat.org/id/eprint/11378
    Official URL: https://doi.org/10.1016/j.cj.2019.07.001
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: The authors are thankful to Vodapally Papaiah for extending technical assistance in field experiments. The work presented in this article is the contribution from research projects sponsored by Department of Agriculture and Co-operation and Farmer Welfare (DAC&FW), Ministry of Agriculture, Government of India and Mars Wrigley, USA. Yaduru Shasidhar duly acknowledges the award of Junior/Senior Research Fellowship from Department of Biotechnology, Government of India. This work has been undertaken as part of the CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC). ICRISAT is a member of the CGIAR Consortium.
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