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Variation for grain micronutrients concentration in wheat core-collection accessions of diverse origin

Author: Velu, G.
Author: Ortiz-Monasterio, I.
Author: Singh, R.P.
Author: Payne, T.S.
Year: 2011
ISSN: 1994-7879
Abstract: Micronutrient malnutrition, resulting from dietary deficiency of important minerals such as zinc (Zn) and iron (Fe), is a widespread food-related health problem. In a recent initiative of CGIAR?s HarvestPlus challenge program is embarked upon to address this issue through the development of biofortified cultivars with elevated levels of these micronutrients in common wheat (Triticum aestivum L.). Genetic enhancement mainly depends on existence of genetic variability available in the gene pool. Hence, the magnitude of variability for grain Zn and Fe concentrations were studied in 600 wheat core-collection accessions of diverse origin. Grain Zn concentrations among the accessions ranged from 16.85 to 60.77 mg kg-1 and Fe concentrations ranged from 26.26 to 68.78 mg kg-1. The highest levels of Zn concentrations were observed in a Chinese spring bread wheat accessions HONG DUAN MANG and highest Fe concentration was observed in a accession originated from Spain ?ANDALUCIA 344?. Top ranking accessions with high Zn and Fe concentrations are being evaluated for multi-locational testing to study the expression of these micronutrients in target countries, also these accessions are being used as potential donor for further germplasm improvement at International Maize and Wheat Improvement center (CIMMYT), Mexico. There was a highly significant and positive correlation between Zn and Fe concentrations (r = 0.81; p<0.01), indicating simultaneous improvement of both of the micronutrients would be effective and high Fe and Zn sources identified in this study provide a valuable genetic resource for breeding cultivars with high Zn and Fe concentrations.
Language: English
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 suitable license for that purpose.
Type: Article
Region: Global
Pages: 43-48
Issue: 1
Journal: Asian Journal of Crop Science
Volume: 3
DOI: 10.3923/ajcs.2011.43.48

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  • Genetic Resources for CIMMYT Staff
    Genetic Resources including germplasm collections, wild relatives, genotyping, genomics, and IP. This collection is only accessible by CIMMYT staff.
  • Wheat for CIMMYT Staff
    Wheat - breeding, phytopathology, physiology, quality, biotech. This collection publications is only accessible by CIMMYT staff.

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