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Identification of site similarities in western and central Asia using CIMMYT international wheat yield data

Author: Lage, J.
Author: Trethowan, R.M.
Author: Hernandez, E.
Year: 2008
ISSN: 0179-9541
Abstract: Understanding the association among wheat growing locations allows plant breeders to better target crosses and identifies locations for germplasm exchange. To examine the relationship between yield testing sites in eight countries in western/central Asia, 291 data sets from CIMMYT&rsquo;s different international yield nurseries were combined into one analysis as no single nursery was well represented across the region; these nurseries represented wheat germplasm specifically developed for different agro-ecological zones including irrigated, semi-arid, high-rainfall, autumn- and spring-sown conditions. The shifted multiplicative model was used to group individual sites into clusters. Results revealed 18 site-by-site combinations as similar to each other and 23 as contrasting at a probability level of P < 15%. CIMMYT&rsquo;s main yield testing site in northern Mexico proved the best predictor for the region. Within the region two sites in Turkey and Iran were identified as possible sites for future regional testing. Overall the study showed that data from different yield nurseries can be combined to improve our understanding of site associations across western/ central Asia to the benefit of both international and regional wheat breeders.
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: West Asia
Region: Central Asia
Pages: 350-354
Journal issue: 4
Journal: Plant Breeding
Journal volume: 127
Keywords: Wheat breeding
Keywords: regional data
Keywords: site associations
Keywords: Asia

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

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