Assessment of elite and local genotypes of rice (Oryza sativa L.) for yield and yield components suited to eastern plain zone of Uttar Pradesh

The present study consists of 26 rice genotypes including one check variety that were evaluated at Field Experimentation Centre of the Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj (Allahabad). The data was recorded on thirteen quantitative characters to study genetic variability, heritability, genetic advance and correlation coefficient analysis and path analysis. The experiment was conducted by using Randomized Block Design with three replications during Kharif -2019. On the basis of mean performance Burma Black Rice found to be superior in grain yield per hill followed by Chinniponni, Assami Variety, showed higher grain yield. Analysis of variance among 26 rice genotypes showed highly significant differences for all the characters under study indicated the presence of substantial amount of genetic variability. Biological yield character had the highest estimates of GCV and PCV. Test weight character also had the highest heritability coupled with high genetic advance. Grain yield per plant showed the high significant positive correlation with plant height, panicle length, number of tillers/plant, flag leaf length, flag leaf width and biological yield showed positive significant correlation with grain yield at phenotypic and genotypic levels. Path coefficient analysis revealed that days to 50% flowering, flag leaf length, flag leaf width, number of tillers/plant, number of panicles/hill, panicle length, biological yield and harvest index has positive direct effect on grain yield perplant.