Vol. 11, Issue 12 (2022)

The 18 progenies of Terminalia bellerica (Gaertn.) Roxb were tested in the field at FC&RI Mettupalayam for their phenotypic and genotypic coefficient of variance, broad-sense heritability and genetic advance for biometric and biochemical attributes such as plant height, basal diameter, volume, chlorophyll 'a', chlorophyll 'b', chlorophyll a/b ratio, total chlorophyll. The phenotypic coefficient of variance was measured larger than the genotypic coefficient of variation among the biometric and biochemical variables which indicating a significant contribution from environmental factors. Plant height and basal diameter were the superior biometric features with the highest PCV, GCV, broad-sense heritability, and genetic progress as a percentage of mean values. As a result, these parameters could be employed as selection criteria to boost the volume of Terminalia bellerica. Among the biochemical attributes, chlorophyll ‘a’ registered higher PCV, GCV, broad-sense heritability and genetic advance as percent of mean followed by chlorophyll b, Carotenoids, total chlorophyll and chlorophyll a/b ratio. As a result of the current study, variability parameters indicate that this species has a wider scope of genetic improvement.