The effect of plant regulators on the yield and fruit quality of ld5 pinkish purple flesh dragon fruit variety

Abstract

The study into the effect of plant growth regulators on the yield and fruit quality of LD5 pinkish flesh dragon fruit variety has been carried out at Southern Horticultural Research Institute. The experiment has been arranged under Randomized Completely Block Design (RCBD) with six concentrations of NAA + GA3 and four replications. The results have shown that the applications of 30 ppm NAA + 40 ppm GA3 and 40 ppm NAA + 40 ppm GA3 on LD5 dragon fruit variety at different stages (10-day flower bud and 5, 10, 15, 20 days after blooming) have increased firmness (1.49 and 1.54 kg/cm2 corresponding to each application),fruit weight (413.50 and 445.63 g/fruit), yield (30.65 and 34.85 kg/plant (post)) as compared to the control variety. Using of 30 ppm NAA + 40 ppm GA3 and 40 ppm NAA + 40 ppm GA3 has also improved the bright colour of fruit peel.