Genetic Diversity Analysis among Genotypes of Bread Wheat (Triticum aestivum L.) for Yield and Its component Traits under Timely Sown Conditions

Abstract

Genetic diversity analysis for yield and its component traits among 60 genotypes of bread wheat (Triticum aestivum L.) under timely sown conditions distributed into seven clusters via D2 statistics using Euclidean distance method which revealed that the cluster IV had maximum number of genotypes followed by cluster II, Cluster VI, cluster I, cluster V and, cluster III and VII. The highest inter-cluster genetic distance existed between cluster IV and VII and the average intra cluster distance between the genotypes of cluster V was maximum. Therefore, genotypes in these clusters may be used to produce the superior hybrids and transgressive segregants. For grain yield and effective tillers had highest mean value in cluster V and cluster VI. Cluster V and VII had highest mean value for 1000-grain weight and plant height respectively. Traits such as by plant height followed by canopy temperature, days to maturity, days to anthesis and grain filling duration contributing total of 50 per cent to the total divergence.