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Evaluation of diversity through genetic variability and correlation studies on vegetative and floral characters of chrysanthemum genotypes were undertaken at experimental farm, Department of Horticulture, NEHU, Tura Campus, Tura, West Garo Hills District, Meghalaya during 2015-2019.Fifteen varieties namely, Korean Red, Korean Yellow, Solan Shringar, Ramblored, Yellow Star, Calabria, Ajay, AAU Yellow, White Star, Korean Bicolour, Charming, Lysid, Safin, Shayana and Gambit were selected for their evaluation. The range of variation was high for number of leaves (38.24-125.11) followed by days to bud initiation (34.60-94.66). Highest phenotypic and genotypic variances were observed for number of leaves (699.74 and 699.70), respectively. The estimates of phenotypic coefficient of variation (PCV) were higher than genotypic coefficient of variation (GCV) for all the traits. Maximum PCV and GCV was observed for dry weight (89.73 and 89.17) followed by number of flowers per spray per plant (78.10 and 78.08). However, maximum heritability were observed in number of leaves (99.98 percent), number of flowers per spray per plant (99.98 percent) and flower longevity (99.97 percent) followed by days to bud initiation (99.95 percent) and plant height (99.94 percent), whereas, maximum genetic advance was noticed in number of leaves (54.49). The high heritability with genetic advance as percentage of mean for number of branches and number of flowers per spray per plant indicates the possible role of additive gene action. The magnitude of genotypic correlation was higher than their corresponding phenotypic correlation for most of the traits, indicating a strong inherent linkage between various traits under study. At genotypic and phenotypic level, number of leaves exhibited highly significant and positive correlation with number of branches (0.889), number of flower head per plant (0.498), number of sprays per plant (0.497) and number of flowers per spray per plant (0.419), while, vase life showed significant and positive correlation with number of flower head per plant (0.315), number of sprays per plant (0.339) and flower diameter (0.311).
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