Research Article 
Genetic Variability, Heritability and Path Coefficient Analyses of Some Agronomic traits in Faba Bean (Vicia faba L.)
Asian Journal of Plant Sciences, 2022, 21(3), 469-477.
Abstract
Background and Objective: Heritability, correlation and path coefficient analyses are essential tools in selection experiments. They are used to determine direct and indirect relationships between yield and certain plant characters. The present investigation aims to study the genetic diversity of nine faba bean (Vicia faba L.) genotypes and to determine some selection criteria for plant breeding to enhance seed yield and production. Materials and Methods: The study was carried out during the 2018/19 and 2019/20 growing seasons to estimate the genetic parameters of 10 faba bean genotypes grown at the Experimental Farm of the Faculty of Agriculture, Cairo University, Giza, Egypt. The experiment was laid out as a Randomized Complete Blocks Design (RCBD) with 3 replications. Results: The performance of the studied genotypes significantly differed for all studied traits in each season. Combined analysis of variance elucidates that years had a significant effect on pods plant–1, seeds pod–1, seeds plant–1 and seed yield plant–1. Season x genotype interaction was not significant for all studied traits, except for harvest index. The highest estimates of heritability (h2B) were obtained for the seed index in the 1st and 2nd seasons. Significant positive correlations were detected between seed yield plant–1 and all studied traits. Path analysis exhibited that number of seeds plant–1 had the highest positive direct effects on seed yield plant–1. Conclusion: Indirect selection for any character with a significantly positive association with yield would improve the productivity, seeds plant–1 is the principal yield component and selection for this trait may be useful in improving the yield of faba bean crop.
ASCI-ID: 7-1996
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