Pre-breeding for diversification of primary gene pool and genetic enhancement of grain legumes

    Sharma, S and Upadhyaya, H D and Varshney, R K and Gowda, C L L (2013) Pre-breeding for diversification of primary gene pool and genetic enhancement of grain legumes. Frontiers in Plant Science, 4 (309). pp. 1-14. ISSN 1664-462X

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    Abstract

    The narrow genetic base of cultivars coupled with low utilization of genetic resources are the major factors limiting grain legume production and productivity globally. Exploitation of new and diverse sources of variation is needed for the genetic enhancement of grain legumes. Wild relatives with enhanced levels of resistance/tolerance to multiple stresses provide important sources of genetic diversity for crop improvement. However, their exploitation for cultivar improvement is limited by cross-incompatibility barriers and linkage drags. Pre-breeding provides a unique opportunity, through the introgression of desirable genes from wild germplasm into genetic backgrounds readily used by the breeders with minimum linkage drag, to overcome this. Pre-breeding activities using promising landraces, wild relatives, and popular cultivars have been initiated at ICRISAT to develop new genepools in chickpea, pigeonpea, and groundnut with a high frequency of useful genes, wider adaptability, and a broad genetic base. The availability of molecular markers will greatly assist in reducing linkage drags and increasing the efficiency of introgression in pre-breeding programs.

    Item Type: Article
    Divisions: RP-Grain Legumes
    CRP: CGIAR Research Program on Grain Legumes
    Uncontrolled Keywords: Pre-breeding, Gene pool, Genetic enhancement, Grain legumes
    Subjects: Others > Food Legumes
    Others > Genetics and Genomics
    Depositing User: Mr Sanat Kumar Behera
    Date Deposited: 01 Aug 2013 09:31
    Last Modified: 21 Oct 2016 05:31
    URI: http://oar.icrisat.org/id/eprint/7023
    Official URL: http://dx.doi.org/10.3389/fpls.2013.00309
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: Authors thank Dr Nalini Mallikarjuna for sharing the material and Dr. Manish Pandey, Dr. 552 Mahender Thudi and Dr. Rachit Saxena for their suggestions in finalizing this manuscript.
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