Genetic Variability & Path Analysis studies in Barley (Hordeum Vulgare L.)

Abstract

The current study was carried out during the Rabi season of 2023 at the Research Farm of the Department of Genetics and Plant Breeding at J. V. College, Baraut, Baghpat. It aimed to evaluate 22 diverse barley genotypes using a randomised block design with three replications. The findings showed that the phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were notably high for traits such as grain yield per plant, biological yield per plant, harvest index, 1000 grain weight, and productive tillers per plant. Additionally, high heritability along with a significant genetic advance as a percentage of the mean was observed for grain yield per plant, biological yield per plant, 1000-grain weight, plant height, harvest index, and days to maturity. Based on the average performance of the genotypes, BH946, Lakhan, JB-1, RD-907, and DWRB-28 stood out as superior not only in terms of seed yield per plant but also for various other yield-related traits.

Keywords- Phenotypic coefficient of variation (PCV), heritability, genetic advance, grain yield per plant, plant height etc.