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QTL mapping for micronutrients concentration and yield component traits in a hexaploid wheat mapping population

Author: Jia Liu
Author: Bihua Wu
Author: Singh, R.P.
Author: Velu, G.
Year: 2019
ISSN: 0733-5210
Abstract: Bread wheat is a major staple cereal provides more than 20% of dietary energy and protein supply to global population. However, with increasing population growth, the problem of nutritional deficiencies is increasingly affecting the health of resource people with predominantly cereal-based diet. Therefore, the development of wheat genotypes with micronutrient-dense grains along with high-yield potential is one of the major priorities of wheat biofortification program at CIMMYT. We conducted a QTL mapping study using a recombinant inbred line (RIL)population derived from a cross between a Chinese parental line with highGZnC and a Mexican commercial bread wheat cultivar Roelfs F2007 to identify QTLs that could potentially be integrated in mineral nutrient concentrations and agronomic-related traits breeding. We evaluated 200 RIL lines for mineral nutrient concentrations and agronomic-related traits over two years. A total of 60 QTLs were detected, of which 10 QTLs for GZnC, 9 for GFeC, 5 for GPC and 36 for agronomic-related traits. Moreover, a total of 55 promising candidate genes were identified from the list of associated markers for GFeC and GZnC using the recently annotated wheat genome sequence. We identified the promising genomic regions with high mineral nutrient concentrations and acceptable yield potential, which are good resource for further use in wheat biofortification breeding programs.
Format: PDF
Language: English
Publisher: Elsevier
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the sutable license for that purpose.
Type: Article
Place of Publication: London (United Kingdom)
Pages: 57-64
Volume: 88
DOI: 10.1016/j.jcs.2019.05.008
Keywords: Wheat Biofortification
Keywords: QTL Mapping
Keywords: Grain Mineral Nutrient Concentration
Keywords: Agronomic-Related Traits
Agrovoc: WHEAT
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Journal: Cereal Science

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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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