Effects of volatiles in twenty non-host plants on the repellented and attractive behaviors of brown planthopper, Nilaparvata lugens

【Objective】To provide scientific evidence for the development and design of repellents and attractants of brown planthopper, Nilaparvata lugens Stal (BPH).【Method】 The repellented and attractivebehaviors response of female adults BPH to volatiles of twenty non-host plants and α-phellandrene, α-pinene,camphene and linalool were tested by a Y-tube olfactometer.【Result and conclusion】The volatiles of Broussonetia papyrifera,Khaya senegalensis,Ageratum conyzoides, Wedelia chinensis, Bidens pilosa,Lantana camara,Eucalyptus exsetrta, Chukrasia tabularis, and the nuts of Foeniculum vulgare revealed repellent effects on BPH，especially, volatiles of W.chinensis, K.senegalensis and E.exsetrta showed significant repellent effects on BPH, with repellency rates 87.5%,83.3%and 72.0% respectively. However, volatiles of the bulb of Allium cepa showed significant attractive effects on BPH, with attractive rate 73.1%. The rest 10 non-host volatiles had no significant effects on BHP repellented and attractive behaviors. Though all 3 compounds were in the volatiles of 9 repellent non-ost plants, α-pinene showed attractive effects, while camphene had significant repellent effects on BPH, but α-phellandrene showed no significant effects on BPH behaviors with all tested concentrations. Furthermore, the linalool had significantly attractive effects at 1 μL, but it had repellent effects at 10 μL and significant repellent effects on BPH above 15 μL.