Abstrait

Mitigation of insecticide detoxifying enzymes in Plutella xylostella using Bacillus thuringiensis

V.Radhakrishnan, L.Allwin, J.S.Kennedy

The activity of insecticide detoxifying enzyme, carboxylesterhydrolase (CEH) andmixed function oxidase (MFO)were found to be increased in P.xylostella with or without à priori exposure to B. thuringiensis subsp. kurstaki (Delfin). A significant reduction was observed in the CEH titre and MFO titre in the population of P. xylostella pre-exposed to B.thuringiensis subsp. kurstaki (Delfin) after 24 hours of post treatment with quinalophos @ 3 ppm were recorded when compared to the same without exposure to B. thuringiensis subsp. kurstaki.