Brinjal Fruit and Shoot Borer- Leucinodes orbonalis Guenee is a major insect pest on brinjal- Solanum melongena worldwide. An effective strategy used in developing pest controlling agents is the synergism between insect pheromones and host plant volatiles, which can increase the attraction of insect pest. The present study was aimed at investigating the chemical constituents and attractant effects of the volatiles extracted from different parts of the host plant brinjal on the behavior of adult L. orbonalis. Bioassay using Y-shaped olfactometer revealed that the one-day old virgin female, gravid female and male insects respond positively to the host plant volatiles extracted from fruits, leaves and shoots but not to that of flowers. It was shown that the gravid females were significantly attracted to all three volatiles (p < 0.05). Bioassay using X-shaped olfactometer identified that all three types of insects highly preferred the volatiles from fruits (p < 0.05). Gas chromatography-mass spectrometry analysis of volatiles indicated that brinjal plant produces volatile secondary metabolites, which include 2,2′-(Ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl) dibenzoate (12.11%), 3,7-dimethylocta-1,6-dien-3-ol (22.38%), Benzyl alcohol (22.9%) and Benzyl alcohol (27.06%) as major constituents from fruits, shoots, leaves and flowers respectively. Responses of insects to the volatiles from host plant in the absence of visual cues direct us to focus on the importance of host plant volatiles to locate the plant. Results of this study emphasize the major role that host plant volatiles play in the attraction of insect pests towards the plant.

茄果螟- Leucinodes orbonalis Guenee 是世界范围内茄果-茄属的主要害虫。开发害虫控制剂的一个有效策略是昆虫信息素和寄主植物挥发物之间的协同作用，这可以增加对害虫的吸引力。本研究旨在研究从寄主植物茄子不同部位提取的挥发物对成虫行为的化学成分和引诱作用。. 使用 Y 形嗅觉计的生物测定表明，一天大的处女、怀孕的雌性和雄性昆虫对从果实、叶子和芽中提取的寄主植物挥发物有积极的反应，但对花的挥发物没有反应。结果表明，怀孕的雌性被所有三种挥发物显着吸引（p < 0.05）。使用 X 形嗅觉计进行的生物测定发现，所有三种类型的昆虫都非常喜欢水果中的挥发物（p < 0.05）。挥发物的气相色谱-质谱分析表明茄子植物产生挥发性次生代谢产物，其中包括 2,2'-(Ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl) dibenzoate (12.11% )、3,7-dimethylocta-1,6-dien-3-ol (22.38%)、苯甲醇 (22.9%) 和苯甲醇 (27.06%) 分别作为果实、芽、叶和花的主要成分。在没有视觉线索的情况下，昆虫对寄主植物挥发物的反应指导我们关注寄主植物挥发物对定位植物的重要性。这项研究的结果强调了寄主植物挥发物在将害虫吸引到植物中所起的主要作用。