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Genetic dissection of zinc, iron, copper, manganese and phosphorus in wheat (Triticum aestivum L.) grain and rachis at two developmental stages

Author: Cu, S.T.
Author: Guild, G.
Author: Nicolson, A.
Author: Velu, G.
Author: Singh, R.P.
Author: Stangoulis, J.
Year: 2020
ISSN: 0168-9452 (Print)
URI: https://hdl.handle.net/10883/20624
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 CIMMYT-Knowledge-Center@cgiar.org 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
Place of Publication: Limerick (Ireland)
Issue: art. 110338
Volume: 291
DOI: 10.1016/j.plantsci.2019.110338
Description: The development of high-yielding wheat genotypes containing micronutrient-dense grains are the main priorities of biofortification programs. At the International Maize and Wheat Improvement Center, breeders have successfully crossed high zinc progenitors including synthetic hexaploid wheat, T. dicoccum, T. spelta and landraces to generate high-zinc varieties. In this study, we report a genome-wide association using a wheat diversity panel to dissect the genetics controlling zinc, iron, copper, manganese and phosphorus concentrations in the grain and rachis during grain development and at physiological maturity. Significant marker-trait associations (MTAs) were identified for each nutrient using multi-locus mixed model methodologies. For mature grain, markers that showed significant pleiotropic effects were found on chromosomes 1A, 3B and 5B, of which those on chromosome 5B at ∼95.5 cM were consistent over two growing seasons. Co-located MTAs were identified for the nutrient concentrations in developing grain, rachis and mature grain on multiple chromosomes. The identified genomic regions included putative candidate genes involved in metal uptake and transport and storage protein processing. These findings add to our understanding of the genetics of the five important nutrients in wheat grain and provide information on genetic markers for selecting high micronutrient genotypes.
Agrovoc: FOOD FORTIFICATION
Agrovoc: PLANT BREEDING
Agrovoc: GENETICS
Agrovoc: TRACE ELEMENTS
Agrovoc: GENETIC MARKERS
Notes: The dataset related with this article is only referential
Related Datasets: https://ars.els-cdn.com/content/image/1-s2.0-S0168945219315110-mmc1.docx
Journal: Plant Science


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

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