Vol. 10, Issue 11 (2021)

Author(s):
M Narayanan, M Arumugam Pillai, D Shoba and A Kavitha Pushpam

Abstract:
The present research work was performed to quantify the genetic variability parameters, correlation and path coefficient studies for nine quantitative characters in F₄ black gram population. The magnitude of phenotypic coefficient of variance was higher than the observed genotypic coefficient of variance and it was revealed that the environment played a main role in the expression of traits. High genotypic and phenotypic coefficient of variation accompanied with high heritability and high genetic advance was recorded for number of pods per plant and single plant yield which indicated that these traits were governed by additive gene action. Single plant yield showed strong positive correlation with number of clusters per plant, number of pods per plant, number of seeds per pod, pod length and 100 seed weight both at phenotypic and genotypic levels. Number of pods per plant exhibited high and positive direct effect on single plant yield followed by number of seeds per pod and 100 seed weight. Number of pods per plants was highest indirect effect on single plant yield through number of seeds per pod, pod length and 100 seed weight. Hence, selection of these traits indicated scope for improving the single plant yield through selection in black gram.