In order to explore the induced resistance of bean plants by different exogenous factors and its effects on Frankliniella occidentalis,the influences of bean plants treated with jasmonic acid(JA),methyl salicylate(MeSA),thrips-infested and mechanical damage on the developmental duration and population dynamics of F.occidentalis were studied.The results showed that the developmental duration of immature stage of F.occidentalis was significantly prolonged when treated with exogenous JA,MeSA and thrip-infestat...