Evaluation of exotic rice germplasm for yield and its components

Abstract

The present investigation consists of 25 genotypes of rice received from Rice Breeding Programme, Directorate of Research, SHUATS, Prayagraj. The study was conducted to evaluate yield and yield contributing traits in randomized block design (RBD) with three replications during kharif- 2018, at Field Experimentation Centre, Department of Genetics & Plant Breeding, SHUATS, Prayagraj (U.P.). The data were recorded on 13 characters to study the analysis of variance, Coefficient of variation, heritability, Genetic advance and coefficient of correlation. Based on the mean performance among 25 genotypes of rice NDR359 genotype was found to be superior in grain yield. The analysis of variance revealed significant differences for all the characters indicating sufficient variability among the genotypes. Highest genotypic and phenotypic coefficient of variations were recorded for harvest index. The characters viz., number of spikelets per panicle and biological yield per hill exhibited high heritability coupled with high genetic advance indicating that simple selection could be effective for improving these characters. The persual of genotypic and phenotypic correlation coefficients indicated that harvest index, biological yield per hill, tillers per hill, panicles per hill and test weight were significantly and positively associated with grain yield. It is suggested that selection for these traits will be helpful in enhancing the grain yield.