Estimation of genetic variability, heritability and genetic advance in marigold (Tagetes spp.)

Ten genotypes of each African marigold and French marigold were collected from different locations to investigate genetic parameters of variability. Phenotypic coefficients of variation (PCV) were higher than genotypic coefficient of variation (GCV) for all the characters studied. However, highest PCV and GCV estimates were found for area of leaf in both groups of marigold. High heritability with high genetic advance was observed for first picking of the flowers followed by last picking of the flowers in African marigold and in French marigold, high heritability with high genetic advance was observed for days to visibility of bud followed by first picking of the flowers.