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Geographic variation in tetraploid wheat (Triticum turgidum spp. turgidum convar. durum) landraces from two provinces in Ethiopia

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Abstract

There is considerable wealth of genetical and morphological variation in tetraploid wheat collected from Ethiopia by past expeditions. Several authors have speculated on the reasons for this concentration of diversity so far removed from the centre of origin of wheats in West Asia. The present study reports results of evaluation carried out on material collected in the early 1970's from Ethiopia. The landraces from the two provinces Shewa and Tigray were found to be distinctly different. This divergence was attributed to the differences in environmental conditions between them. Wide differentiation among landraces within each province was also present. The Ethiopian farmer's practice of growing composite cultivars in the field has resulted in bulk samples of Ethiopian landraces containing several agrotypes. The proportion of total variance due to differences among agrotypes within landraces was by far the greatest found in this study, followed in most cases by the variation among landrace populations within provinces which exceeded, in turn, the variation between province gene pools. The optimal strategy for further germplasm collections and implications for improvement and conservation in locally-based community gene banks are discussed.

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Author notes

  1. Luciano Pecetti

    Present address: Istituto Sperimentale per le Colture Foraggere, viale Piacenza 29, 20075, Lodi, Italy

  2. Ardeshir B. Damania

    Present address: Genetic Resources Conservation Program, University of California, 95616-8602, Davis, California, USA

Authors and Affiliations

  1. International Center for Agricultural Research in the Dry Areas, P.O. Box 3466, Aleppo, Syria

    Luciano Pecetti & Ardeshir B. Damania

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  1. Luciano Pecetti
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  2. Ardeshir B. Damania
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Pecetti, L., Damania, A.B. Geographic variation in tetraploid wheat (Triticum turgidum spp. turgidum convar. durum) landraces from two provinces in Ethiopia. Genet Resour Crop Evol 43, 395–407 (1996). https://doi.org/10.1007/BF00123730

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  • DOI: https://doi.org/10.1007/BF00123730

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