Reaction of different bitter gourd genotypes against Infestation of fruit fly (Bactrocera Cucurbitae Coquillett.)

Field experiments were conducted at Vegetable Research Farm, Indian Institute of Vegetable Research, Varanasi, during 2006–2007 and 2007–2008, to determine the varietal resistance of bitter gourd (Momordica charantia) against the infestation of melon fruit fly Bactrocera cucurbitae. The results of varietal resistance trial reveal that, IC 248282 with (13.64%) fruit infestation was found the least susceptible to the attack of melon fruit fly followed by Kerala collection - 1 (15.68%) and IC 68314 (18.11%). The variety Pusa Do Mausami was most susceptible (having 81.57% fruit infestation) to the attack of this pest followed by Arka harit (78.17%) and Jaunpuri (76.21%). None of the genotypes were found highly resistance, out of 74 genotypes five genotypes was found resistance, 61 moderately resistance, five susceptible and three highly susceptible.