Abstract:

The effect of host plants，including alfalfa，amaranth，lettuce，cabbage，corn，on activity of acid phospholipase，alkaline phospholipase，glutathione-s-transferase and acetylcho linesterase in beet army，Spodoptera exigua was studied. Results showed that significant activity changes of acid phospholipase，alkaline phospholipase，glutathione-s-transferase and acetylcho linesterase were found in Spodoptera exigua larvae feeding on different host plants. The others have marked difference between one another except no difference on activity of basic phospholipase between feeding on amaranth and feeding on alfalfa，cabbage.