Correlation, Path-Coefficient & Genetic Diversity Patter in Wheat (Triticum Aestivum L.) Under Rainfed Conditions

Abstract

An experiment was carried out at Kisan (PG) College, Simbhaoli during rabi season 2021-22 to access the correlation, path-coefficient and genetic variability in 40 morphological diverse accessions of wheat (Triticum aestivum L.) under rainfed condition. The analysis of variance showed highly significant differences among the geno types for all the characters. The highest estimates of the phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were observed for grain yield/plant, tillers/plant andbiological yield/plant.Grain yield/plant, biological yield/plant and harvest index showed high heritability coupled with high genetic advance as percent of mean indicating the influence of additive gene effects. Biological yield/plant, harvest index showed positive and significant correlation with grain yield/plant and exerted positive and high direct effect on grain yield/plant. D2 analysis grouped the 40 genotypes into six clusters. The maximum inter-cluster distance was observed between cluster V and VI. Hence, the genotypes belonging to cluster V and VI can be utilized in crop improvement programs and for the development of high yielding varieties under rain-fed conditions.