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A set of 48 rice genotypes were evaluated to study the inter-relationship among yield and yield attributing traits under irrigated condition during Kharif 2018 at Rice Research Farm, Bihar Agricultural University, Sabour (Bhagalpur), India. The analysis of variance revealed highly significant variation among the genotypes for all the traits studied. Grain yield per plant showed highly significant and positive association with effective tillers per hill, 1000 grain weight, biological yield, harvest index (%) and significant and positive association with number of fertile grains per panicle, root biomass and chlorophyll index. However, it exhibited highly significant and negative correlation with spikelet sterility %. Path coefficient analysis revealed that total number of grains per panicle, number of fertile grains per panicle, panicle density index, panicle length, biological yield and harvest index (%) had high positive direct effects on grain yield per plant. Hence, selection based on these traits could help to bring simultaneous improvement of yield and yield attributes. In rest of the characters studied, correlation was mainly due to indirect effects through component characters and hence indirect selection will lead to yield improvement in rice.

international journal of chemical studies

The inter-relationship among yield and yield attributing traits of rice (Oryza sativa L.) under Irrigated condition through correlation coefficient studies and path analysis