International Journal of Ecology and Environmental Sciences

International Journal of Ecology and Environmental Sciences


International Journal of Ecology and Environmental Sciences
International Journal of Ecology and Environmental Sciences
2020, Vol. 2, Issue 4
Variation and genotype x environment interaction for quality characters among selected coffee hybrids under highland environments in Ethiopia

Fekadu Tefera, Sentayehu Alamerew, Dagne Wegary

An experiment to determine quantitatively the extent of morphological and quality variation in selected hybrid of Arabica coffee was conducted at two different sites around Gera district in South-western region of Ethiopia. Genetic variation, phenotypic diversity, genotype × environment interaction of 11 quality (three green bean and eight organoleptic cup quality) characters were studied in ten arabica coffee hybrids including two standard checks across four highland local environments (location-by-year combinations). The randomized complete block design was used in each environment. The quantitative phenotypic data were analyzed and partitioned into components using mixed model methodology through SAS. Coffee quality assessment result showed that genetic variation for most of quality attributes was low as expressed by the low to moderate line mean-basis broad sense heritability (<0.50). Moderately high heritability were estimated by two physical bean characteristics, bean size (0.91), shape and make (0.72), and two organoleptic quality characters, acidity (0.67) and overall quality (0.55). The G x E effect of these characters was also not severing. Thus, selection for bold, very good shaped bean and desirable cup quality (balanced acidity) should be possible at single location. The study indicates the presence of low to moderate variation for coffee quality characters among the tested hybrid genotypes.
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How to cite this article:
Fekadu Tefera, Sentayehu Alamerew, Dagne Wegary. Variation and genotype x environment interaction for quality characters among selected coffee hybrids under highland environments in Ethiopia. International Journal of Ecology and Environmental Sciences. 2020; 2(4): 154-159.