• Wheat Pre-breeding Drought Tolerant Lines


    These are wheat pre-breeding lines derived from top-crosses using one germplasm bank accession, crossed to an elite line, and then crossed to a second elite line. The accessions were selected as promising sources for use in breeding for drought tolerance, while CIMMYT wheat breeders recommended the elite lines as the best available lines. The experimental lines have been identified based on field trials under drought stress and well-irrigated conditions in Mexico, with mild selection to eliminate material susceptible to yellow rust or with serious agronomic weaknesses.

    Product details and features

     

    1. List of lines with phenotypic data is available including with checks, and elite lines as reference materials: Two pre-breeding lines provided 6 and 7 % grain yield advantage over best check variety, ‘Baj’, under drought stress environment. Under irrigated condition there was no significant difference among pre-breeding lines and the checks.
    2. Description of genotypic data available November 2017
    3. Ability to sort and select lines by various traits, e.g. days to heading (DH), days to maturity (DM), Height (H) and Yield (Y) – available November 2017


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  • Comments

    These materials are suited for research or for large breeding programs interested in exploring exotic germplasm sources. These products can be used as drought tolerant bridging germplasm by interested researchers because two lines (IWPN-1 GID: 7687479 to 7642491) showed significant tolerance compared with the most tolerant check, ‘Baj’.

    Availability

    Currently available. Seeds of these entries are available from CIMMYT’s Germplasm Bank. They can be requested as international wheat pre-breeding nursery-1 (IWPN-1).



    Primary Users

    Wheat breeders for whom drought tolerance is a crucial priority trait; wheat breeders and geneticists investigating drought tolerance; researchers studying physiological mechanisms of drought tolerance; researchers engaged in gene discovery for drought tolerance.

     

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