• Maize Drought Tolerant Semi-Inbred Lines


    Early generation lines developed through backcross breeding which have demonstrated enhanced levels of drought tolerance at flowering and grain fill stages of crop growth. Several landrace accessions identified through phenotypic evaluation to have useful levels of drought tolerance were used as donors. Several elite CIMMYT Maize Lines (CMLs), selected with input from line and hybrid development breeders, were used as recurrent parents.

    Product details and features

     

    1. Semi-inbred lines of lowland tropical and sub-tropical adaptation separated into “Tuxpeño” and “non Tuxpeño” heterotic grouping
    2. Semi-inbred lines developed using recent and breeder preferred CMLs
    3. Semi-inbred lines have >5% yield advantage under drought stress relative to genetic and key drought-tolerant checks, and have yield within ±10% of elite check under non-stressed conditions


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    1. Donor accession and recurrent parent line data including passport, geographical information system (GIS)-derived, pedigree, phenotype and genotype available in searchable format through Germinate (http://germinate.seedsofdiscovery.org/) starting January 2018

    Comments

    These are improved materials suited for use in small to large research or breeding programs interested in exploring and using exotic drought tolerant donor sources. Those interested in these products, especially those wanting to further explore accessions for additional allelic variation for drought tolerance may also be interested in landrace panels for drought tolerance.



    Primary Users

    Maize breeders for whom drought tolerance is a crucial priority trait; maize breeders and geneticists investigating physiological and molecular basis of drought tolerance; researchers and students engaged in gene discovery for drought tolerance.

    Availability

    Available November 2017
    50 seeds of each line available per request

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