Correlation and path studies of local germplasm of rice of Himachal Pradesh
Divya Thakur and DP Pandey*
Rice & Wheat Research Centre, CSKHPKV, Malan (HP) Pin-176 047*Corresponding author email: email@example.com
Received: 5th May 2019, Accepted: 21st June 2019
The present investigation was carried out to study the correlation and path analysis in forty five genotypes including checks of rice (Oryza sativa L.). In general, genotypic correlation coefficient was higher in magnitude than the phenotypic correlation, indicating more genetic association among the various traits. Grain yield per plant exhibited significantly positive association with days to 50% flowering, plant height, panicle length, grains per panicle, spikelets per panicle, 1000-grain weight, grain length, grain breadth and spikelet fertility at both genotypic level and at phenotypic level indicating that simultaneous improvement of all the characters is possible. Path analysis revealed that at genotypic level, grain length had the highest positive direct effect on the grain yield per plant followed by spikelet fertility, effective tillers per plant, spikelets per panicle, panicle length, 1000-grain weight and protein content. Hence, emphasis can be laid out on these traits during selection for further improvement in grain yield in rice.