روي سه رقم بادنجان در شرايط آزمايشگاهي Bemisia tabaci)Gennadius( بررسي بيولوژي سفيد بالك پنبه

A Study of Biology of Cotton Whitefly Bemisia tabaci (Gennadius) on Three Cultivars of Eggplant in Laboratory Conditions

Prmaturity developmental time, premature mortality, adult longevity, mean daily eggs and mean total eggs, sex ratio and life table parameters in cotton whitefly on three varieties of eggplant (Ghasr, Esfehani and Inerash) were determined at 30°C, 60±5Z R.H.and 14L:10D photophase. Developmental times of this insect on the said varieties were 17.02, 16.07, and 15.02 days respectively. Mortality percentages on the three varieties were 10.3, 12.5, and 117. , respectively. Adult longevity of males and females on the varieties were 3.85, 4.14 and 4.2 days for males and 8.85, 8.71 and 9.2 days for females. Mean daily eggs and mean total eggs of cotton whitefly on the studied varieties were 4.1, 4.1, 5.3 and 35.8, 40.5 and 51.8 , respectively. Among sex ratios of cotton whiteflies on these varieties no significant differences were observed. Intrinsic rates of increase on these varieties were 0.1047, 0.1145, and 0.1305, respectively. With regard to life history and life table parameters, Ghasry was the most resistant variety among the studied varieties under laboratory conditions .