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Correlation and path coefficient analysis in peanut (Arachis hypogaea L) genotypes under drought stress and irrigated conditions | Abstract
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Annals of Biological Research

Abstract

Correlation and path coefficient analysis in peanut (Arachis hypogaea L) genotypes under drought stress and irrigated conditions

Author(s): Seyyed Mustafa Sadeghi* and Seyyed Ali Noorhosseini-Niyaki

In order to have a successful breeding program, it is important to determine the genetic relationship among the traits. In this study, 23 groundnut genotypes were evaluated to investigate the relationship among agronomic traits in groundnut under drought stress and irrigated condition. In each condition, a randomized complete block design with three replications was used. The correlation coefficients revealed that in both conditions, 100- seed weight, total no. of kernels per plant, total no. of pods per plant and biomass had a high positive with seed yield Path analysis suggested that in irrigated condition total no. of kernels per plant, 100- seed weight and total no. of pods per plant and in drought stress condition 100- seed weight, total no. of kernels per plant, total no. of pods per plant and biomass had greatest positive direct effects on seeds yield. High direct effects were contributed by 100- seed weight and total no. of kernels per plant although the later had positive association with seed yield. Moreover, it was noticed that high indirect contribution was via 100- seed weight and total no. of kernels per plant by most of the yield components and hence these two parameters (100- seed weight and total no. of kernels per plant) should be given more consideration while deciding about selection criteria of genotypes under irrigated and drought stress conditions.