Use of wild Pennisetum species for improving biotic and abiotic stress tolerance in pearl millet

    Sharma, S and Sharma, R and Pujar, M and Yadav, D and Yadav, Y and Rathore, A and Mahala, R S and Singh, I and Verma, Y and Deora, V S and Vaid, B and Jayalekha, A K and Gupta, S K (2020) Use of wild Pennisetum species for improving biotic and abiotic stress tolerance in pearl millet. Crop Science (TSI), 61 (1). pp. 289-304. ISSN 0011-183X

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    Abstract

    Pearl millet [Pennisetum glaucum (L.) R. Br.] is one of the world’s hardiest warmseason cereal crop cultivated for food and animal feed in the semi-arid tropics of Asia and Africa. This crop faces terminal drought during rainy and flowering-stage heat stress during summer seasons. Blast is emerging as a serious threat affecting its production and productivity in India. Using wild P. violaceum (Lam) Rich. and pearl millet cultivars, prebreeding populations were developed following backcross method. These populations were evaluated in target ecologies in India at three locations during the 2018 summer season for flowering-stage heat stress and at two locations during the 2018 rainy season for terminal drought stress.Atotal 18 introgression lines (ILs) from Population (Pop) 3 exhibited improved seed set under high heat stress vs. the cultivated parent, whereas no IL was better than the cultivated parent in Pop 4. Under rainfed conditions at Hisar and Bawal, India, 19 ILs from Pop 3 and 16 ILs from Pop 4 showed significantly higher dry fodder yield than the cultivated parents. Further, screening of ILs for five diverse pathotype isolates—Pg 45, Pg 138, Pg 186, Pg 204, and Pg 232—of blast resulted in the identification of resistant ILs. Use of these promising ILs in breeding programs will assist in developing new varieties and hybrids with improved tolerance to biotic and abiotic stresses. The study indicated the genetic differences between the parents involved in crossing and also highlighted the importance of precise phenotyping of wild species for target trait prior to use in prebreeding work.

    Item Type: Article
    Divisions: Research Program : Asia
    Research Program : Genetic Gains
    CRP: CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC)
    Uncontrolled Keywords: Pearl Millet, Abiotic Stress, Stress Tolerance
    Subjects: Others > Abiotic Stress
    Others > Biotic Stress
    Mandate crops > Millets > Pearl Millet
    Depositing User: Mr Arun S
    Date Deposited: 06 Feb 2021 16:22
    Last Modified: 17 Feb 2021 09:33
    URI: http://oar.icrisat.org/id/eprint/11701
    Official URL: https://doi.org/10.1002/csc2.20408
    Projects: UNSPECIFIED
    Funders: GlobalCrop DiversityTrust, Grant/Award
    Acknowledgement: This work was undertaken as part of the initiative “Adapting Agriculture to Climate Change: Collecting, Protecting and Preparing Crop Wild Relatives,” which is supported by the Government of Norway. The project is managed by the Global Crop Diversity Trust with the Millennium Seed Bank of the Royal Botanic Gardens, Kew, UK, and implemented in partnership with national and international gene banks and plant breeding institutes around the world. Members seed companies of PMHPRC (ICRISAT-Pearl Millet Hybrid Parents Research Consortium) provided sites and in kind support for heat stress screening
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