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Zekeria Yusuf Habib
Habtamu Zeleke
Wassu Mohammed
Arno Hugo
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Zekeria Yusuf Habib
Habtamu Zeleke
Wassu Mohammed
Arno Hugo
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International Journal of Plant Breeding and Crop Science

Correlation and Path Analysis of Groundnut (Arachis hypogaea L.) Genotypes in Ethiopia

Zekeria Yusuf, Habtamu Zeleke, Wassu Mohammed, Shimelis Hussein, Arno Hugo

Accepted 19 April, 2017

Citation: Yusuf Z, Zeleke H, Mohammed W, Hussein S, Hugo A (2017).  Correlation and Path Analysis of Groundnut (Arachis hypogaea L.) Genotypes in Ethiopia International Journal of Plant Breeding and Crop Science 4(2): 197-204.

Copyright: © 2017 Yusuf 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

Sixteen groundnut genotypes (including local check) were evaluated for quantitative parameters. The crop was sown during 2015 Ethiopian wet season in four locations. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Twelve agromorphological characters were evaluated and the covariance, coheritability, phenotypic, genotypic and environmental correlations and also the direct and indirect effects of the component variables on grain yield/ha were estimated. The results indicated that genotypic correlations were higher than the phenotypic and environmental ones. The grain yield/ha presented positive and significant genetic correlation with PWP, SWP and 100SW.  Path analysis based on genotypic and phenotypic correlations showed that direct effects were generally lower than indirect effects on the grain yield showing that no best character contributes to GY/ha. Instead, characters like NMP, PWP, SWP, 100SW, NSPOD and AGBP should be recommended for groundnut breeding for increasing GY/ha.  

Key Words: groundnut, genetic, phenotypic correlations, agromorphological characters.