부산대학교 도서관

Diaeretiellarapae (McIntosh) (Hymenoptera: Braconidae) is one of the most promising, effective and a common endoparasitoid of different aphid species including cabbage aphid, Brevicorynebrassicae L. (Hemiptera: Aphididae). The present investigation was undertaken to study the influence of different cauliflower cultivars (Early London, PSBK-1, PSBK-25, Pusa Himjyoti and Snowball Super) on the cabbage aphid and biological growth parameters of its parasitoid, D.rapae. Parasitoid took maximum time to complete its life cycle from egg to adult emergence on cv. PSBK-25 and minimum on cv. Snowball Super. The adult female and male longevity were maximum on cv. PSBK -1 i.e., 7.8 days and 6.7 days, respectively. The fecundity of the parasitoid was similar for both PSBK-1 and PSBK-25. Gross reproductive rate (GRR) of the parasitoid was maximum on PSBK-1 and minimum on Snowball Super. The intrinsic rate of increase (r) of the parasitoid was maximum on Snowball Super and minimum on PSBK-25 while doubling time was higher on PSBK-25 and lower on Snowball Super. Hence, cauliflower cv. PSBK-1 can be exploited for mass production of D.rapae in pest management programme.