Abstract:
Strawberry (Fragaria × ananassa) is a temperate fruit crop that has great potential. But it is growing in tropical and subtropical region also. Its growth affect by a number of physiological, genetic, and biochemical processes. Plant growth regulators are responsible for regulate plant growth and other physiological functions. The present experiment was conducted to find out the effect of plant growth regulators on the morphology of strawberry cv. Winter Dawn under protected cultivation. The experiment was conducted with ten treatments and three replications of each treatment in a Randomized Block Design (RBD). The treatment consisted of three different concentrations of plant growth regulators viz. T 1 : NAA 25 ppm, T 2 : NAA 50 ppm, T 3 : NAA 75 ppm, T 4 : GA 3 25 ppm, T 5 : GA 3 50 ppm, T 6 : GA 3 75 ppm, T 7 : CCC 500 ppm, T 8 : CCC 750 ppm, T 9 : CCC 1000 ppm, and T 10 : Control. GA 3 75 ppm and CCC 1000 ppm were observed to exhibit a significant effect on the morphological parameters. The result reveals that the maximum plant height (22.47cm), number of leaves (22.84), plant spread (32.96cm), leaf area (128.9cm 2 ), internodal length (13.17cm), number of days for flower initiation (66.64), number of flowers/plant (22.57), number of fruits/plant (20.10), number of fruit/truss were recorded in plants sprayed with GA 3 75 ppm. The minimum days taken in flowering (50.09 days) and highest crown diameter (1.33cm) were found in CCC 1000 ppm.