Diamond-back moth (Plutella xylostella, Lepidoptera: Plutellidae) was one of themost important and destructive pest of crucifer. We studied the relationships andmechanism of action among plant, diamond-back moth and insecticide, using different typeinsecticides (fenvalerate、spinosyns、azadirachtin), different host (hobby and non-hobbyhost) and different resistant strains (spinosad-resistant strain, fenvalerate-resistant strain andazadirachtin-resistant strain).
1. Risistance selection to diff...