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Ejigu Ejara Hordofa
Wassu Mohammed
Berhanu Amsalu
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Wassu Mohammed
Berhanu Amsalu
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International Journal of Plant Breeding and Crop Science

Correlations and path coefficient analyses of yield and yield related traits in common bean genotypes (Phaseolus vulgaris L.) at Abaya and Yabello, Southern Ethiopia

Ejigu Ejara*, Wassu Mohammed and Berhanu Amsalu

Accepted 19 April, 2017

Citation: Ejara E, Mohammed W, Amsalu B (2017). Correlations and path coefficient analyses of yield and yield related traits in common bean genotypes (Phaseolus vulgaris L.) at Abaya and Yabello, Southern Ethiopia. International Journal of Plant Breeding and Crop Science 4(2): 215-224.

Copyright: © 2017 Ejara et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Abstract

Common bean is among the major crops grown in southern Ethiopia including Borana zone where the majority of the farmers are Agro-pastoralist and produce the crop mainly for home consumption. However, scarcity of varieties that fit to the environment is one of the major production constraints. Therefore, this experiment was conducted to evaluate 36 common bean genotypes in triple lattice design to generate information on the association of yield and yield related traits, and to determine the direct and indirect effects of yield related traits on grain yield. Thousand seeds weight, seed number per plant, seed number per pod and number of primary branches per plant showed positive and highly significant correlations with grain yield. Moreover, thousand seed weight, seeds per plant and seeds per pods had high positive direct effects on grain yield both at genotypic and phenotypic levels. This suggested the importance of considering these traits during selection to improve grain yield in subsequent generations. In contrast, the negative direct effects of days to flowering and maturity as well as the negative indirect effects of these traits via other traits on grain yield suggested the need to select genotypes for early flowering and maturity for the study area.

Keywords: Direct effect, genotypic path coefficient analysis, indirect effects, phenotypic path coefficient analysis, Residual effect.