Analysis of Genetic Variability for Some Yield Related Characters Among Rice Genotypes

Abstract

Rice is one of the world’s most important staple food crop and a primary source of food for more than half of the world’s population due to the very good source of nutritional value; hence it is the major source of food of many developing countries. Genetic improvement totally depends upon the amount of genetic variability present in the population. In crop like rice, the genotype serves as a very useful source of base population and provides a good scope for wide variability. The present investigation was carried out to study the genetic parameters observe on different yield and yield component traits with 37 genotypes of rice in randomized complete block design with three replications during kharif 2011. High phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were recorded for number of grains per panicle (29.67 and 28.78), grain yield per plant (26.36 and 24.90), while it was moderate for harvest index (19.69 and 18.27), biological yield per plant (16.37 and 14.05), number of productive tillers per plant (15.59 and 14.73) respectively.