A new observation on feeding behaviour of pink bollworm and its application in screening Bt-resistant population.

ABSTRACT: The pink bollworm (PBW), Pectinophora gossypiella (Saund.) does not feed on leaves in natural circumstances. We made an attempt with the first instar larva (5 days old) and found it eats the leaf in the absence of other foods. Utilizing this new feeding behaviour, a simple methodology was developed for screening of resistance in PBW against Bt cotton plants. The PBW collected from BGII Bt cotton fields (BGII-resistant population) and NBAIR culture (susceptible population) were reared under laboratory conditions for two generations. Laboratory reared 5-day old larvae of PBW were released on cotton leaf discs individually for screening. The BGII-resistant and susceptible larvae fed an average leaf area of 75.52 ± 16.68 and 5.95 ± 0.93 mm² with survival rate of

SUBMITTER: Reyaz AL 

PROVIDER: S-EPMC5931942 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature