author(s)
Imtiaz Ali Khan, Komal Habib, Rasheed Akbar, Ashraf Khan, Muhammad Saeed, Abid Farid, Ijaz Ali, Mukhtar Alam

abstract
Aphis gossypii Glover (Homoptera, Aphididae), Amrasca biguttula biguttula (Ishida) (Hemiptera, Cicadellidae) and Leucinodes orbonalis Guenee (Lepidoptera, Pyralidae) are serious pests of S. melongena in Pakistan. Using host plant resistance can be safe and cheap alternative to insecticidal control of insect pests of S. melongena. The experiment was conducted at the New Developmental Farm (NDF), The University of Agriculture, Peshawar (UAP) in 2014. Three Brinjal genotypes Shamli, Pearl Long and Black Beauty were used in the study. The results of proximate chemical composition of leaves and fruits revealed that moisture content was higher (93%) in Black Beauty, ash (6.4%) in Pearl Long, crude protein (1.51%), crude fat (0.31%), total sugars (4.22%) and fiber (1.33%) in Shamli. Moisture and protein were significant and positively correlated with the population of A. gossypii, A. biguttula biguttula and L. orbonalis except in Black Beauty. The ash and fat were significantly negatively correlated with the pests density whereas fiber and total sugar showed non-significant effect. These results of proximate chemical composition will provide baseline for using host plant resistance in insect pests control of brinjal in Peshawar.