Vol. 11, Issue 8 (2022)

Author(s):
N Laleeth Kumar, S Saravanan, M Arumugam Pillai and J Sheela

Abstract:
The present study was carried out at Agricultural College and Research Institute, Killikulam, Tuticorin district during Rabi 2021-22 to characterize the inherent genetic variability among 105 traditional rice varieties against nine morphometric yield contributing traits in a randomized block design with three replications. Univariate analysis among rice genotypes elucidated significant differences for all the traits studied. Phenotypic coefficient of variation (PCV) was relatively higher than genotypic coefficient of variation (GCV) for all the traits. The traits such as number of productive tillers per plant, number of filled grains per panicle, and thousand-seed weight (g) had exhibited the higher estimates for both PCV and GCV. Heritability and genetic advance were also recorded high for all the yield attributes, indicating the role of additive gene for heritability, suggesting the direct selection for yield contributing trait always will be rewarding.