Effect of PGRs on Vegetative and Reproductive Traits of Bitter Gourd (Momordica charantia L.): A Field Assessment
Bitter gourd (Momordica charantia L.) is a popular crop grown as field and backyard vegetable in Asian countries. A field experiment was performed using Randomized Complete Block Design (RCBD) to assess the effect of plant growth regulators (PGRs) on the productivity of bitter gourd cv. Faisalabad Long. There were four treatments viz. control (no PGR), GA3 100 mg L-1, IAA 200 mg L-1 and GA3 50 + IAA 100 mg L-1, and each treatment was replicated thrice. Results revealed that untreated (control) plants took maximum days to flower (45.66), while both GA3 100 mg L-1 and GA3 50 + IAA 100 mg L-1 treated plants behaved statistically alike with 41.00 and 42.33 days, respectively. Application of GA3 100 mg L-1 depicted significant superiority for fruit length, average fruit weight, fruit yield per plant and seed yield per plant. However, statistically similar response was recorded for all the PGR treatments for male and female flowers per plant, time to first harvest, number of fruits per plant and fruit diameter; while maximum vine length at final harvest was recorded when GA3 and IAA were applied in combination. Overall results indicated that application of GA3 100 mg L-1 resulted in early crop maturity and significantly higher fruit yield per plant when compared with other treatments.