The treatment of lymantria dispar larvae attack was conducted on leaves of tested crops,and the resistance enzyme activities in crops leaves were measured to explore induced resistance of wheat and corn from Lymantria dispar larvae attack. The result showed that CAT、PPO、POD activity of leaves from wheat and corn rose distinctly or significantly,PAL activity of leaves from wheat and corn rose distinctly or changed insignificantly. The results suggest that wheat and corn of Lymantria dispar larvae attack can ...