This book was written to help plant breeder/ Geneticists, Research scholar, student and farmer. It deals with various qualitative and quantitative character.It explains the nature of variation, divergence between the genotypes for yield components and its important for selection of genotypes for hybridization programme. The specialities of this book was discussed about the battering quality. The information in this book will be highly useful for scientist, Research scholar, PG and Ph.D studen