Author(s):

Mamilla Sindhuja and VM Prasad

Abstract: The present investigation entitled “Effect of different plant growth regulators and their levels on vegetative growth, floral yield and vase life of China aster [Callistephus chinensis (L.) Nees] cv. Shashank” was under taken at Department of Horticulture, Naini Agriculture Institute, Sam Higginbottom university of Agriculture, Technology and Sciences (SHUATS), during the year 2016-17 with thirteen treatments which replicated thrice in a Randomized Complete Block Design. The treatments comprising of GA₃, NAA, CCC and their different concentrations along with control. The results of the study revealed that maximum growth attributes like plant height (75.74 cm), plant spread (37.7 cm), number of leaves per plant (168.15), number of branches per plant (32.01), floral attributes like number of flowers per plant (71.54), flower diameter (6.21 cm), flower weight (5.5 g), flower yield per hectare (12.58 t) was recorded by the application of GA₃ at 200 ppm. The minimum duration for bud initiation (51.67), minimum days to flowering (65.86) with maximum vase life (9.0 days) were recorded in CCC @ 1500 pm.

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