Exploring root development and architecture in one of the most heat and drought tolerant cereals, pearl millet

    Passot, S and Gnacko, F and Atkinson, J and Atkinson, B and Lucas, M and Guyomarc'H, S and Boudon, F and Couderc, M and Zekraoui, L and Sturrock, C and Kane, N and Hash, C T and Gantet, P and Bennett, M J and Wells, D and Vigouroux, Y and Guédon, Y and Laplaze, L (2015) Exploring root development and architecture in one of the most heat and drought tolerant cereals, pearl millet. In: Plant Phenotyping Symposium, Nov 2015, Barcelone, Spain.

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    Abstract

    Higher global temperatures due to climate change places our agriculture at risk. Pearl millet is a subsistence cereal crop adapted to heat, drought and poor soils, and has potential to produce high grain and fodder yields at high temperatures where other crops fail. Root architecture contributes to this adaptation and thus provides promising traits that could be targeted by selection, but little is known about the genetic regulation of root traits in pearl millet. To better understand pearl millet root growth pattern in soil and the impact of drought stress, we used the Hounsfield CT Facility (University of Nottingham). This allowed us to non-invasively analyze over time the soil volume explored by the pearl millet root system under different moisture conditions. Using the RootTrace facility (University of Nottingham), we performed high-throughput phenotyping of a set of 108 genetically diverse pearl millet inbred lines, monitoring their early seminal root growth. These phenotypic data will be combined with genotyping-by-sequencing (GBS) data in order to identify genomic regions controlling this trait via genome-wide association studies (GWAS).

    Item Type: Conference or Workshop Item (Paper)
    Divisions: RP-Dryland Cereals
    CRP: CGIAR Research Program on Dryland Cereals
    Uncontrolled Keywords: Drought tolerant, Pearl millet, Temperature Changes, Root development
    Subjects: Mandate crops > Millets > Pearl Millet
    Others > Climate Change
    Depositing User: Mr Ramesh K
    Date Deposited: 05 Feb 2016 05:41
    Last Modified: 05 Feb 2016 05:41
    URI: http://oar.icrisat.org/id/eprint/9298
    Acknowledgement: UNSPECIFIED
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