Abstract
One hundred and forty-four heterogeneous tef germplasm accessions collected from 10 major tef growing areas in Ethiopia were evaluated for 18 quantitative traits in a simple lattice design, at Holetta and Ginchi, in 2001 main growing season to study the genetic diversity in tef. The combined analysis of variance revealed the presence of significant variation among germplasm accessions for all traits studied. Cluster analysis revealed the overlapping of the germplasm accessions from different origin and the accessions were grouped into eight distinct clusters of 1–78. Generalized distance square confirmed the presence of significant genetic distance between clusters. In principal component (Prin) analysis, the first four principal components with latent root values above one accounted for about 80.6% of the variability existing among the germplasm accessions. Prin1 constituted about 55% of the variability mainly from almost equal contribution of 10 quantitative traits, indicating that most of the traits are equally important in tef diversity. In this study, the regions and altitudes of origin were not found to have a substantial effect on the genetic diversity in tef germplasm. Diversity within the regions was found to be significant and, hence, an opportunity for exploitation in tef improvement.
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Adnew, T., Ketema, S., Tefera, H. et al. Genetic Diversity in Tef [Eragrostis tef (Zucc.) Trotter] Germplasm. Genet Resour Crop Evol 52, 891–902 (2005). https://doi.org/10.1007/s10722-003-6099-0
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DOI: https://doi.org/10.1007/s10722-003-6099-0