Record Details


Field	Value

Title	Relationships among international testing sites of spring durum wheat

Names	Abdalla, O.S. Crossa, J. Autrique, E. DeLacy, I.H.
Date Issued	1996 (iso8601)
Abstract	Knowledge of the relationships among international test sites will facilitate the effective targeting of germplasm exchange. Five years of grain yield data from the Elite Durum Yield Trial, consisting of 132 trials from 32 locations in 22 countries, were studied. Pattern analysis, the combination of ordination and cluster analysis, was used to identify groupings of international test sites that represent similar selection environments and to compare location association with the mega-environment designations of the CIMMYT breeding programme. Two main environmental groups and six subgroups were identified for durum wheat (Triticum turgidum var. durum [T. durum]). The major determinants of the groupings were latitude and moisture supply. Biotic and abiotic stresses influenced further delineation of the clusters. Discrepancies between mega-environment designation and pattern analysis results warrant further investigations of the underlying causes
Genre	Article
Access Condition	Restricted Access
Identifier	http://hdl.handle.net/10883/2310

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