蚜虫性信息素对桃园蚜虫的引诱作用

将从荆芥Nepeta cataria L.中提取的纯度为96%的荆芥内酯和通过二异丁基铝还原提取的荆芥内酯得到的纯度为67%荆芥醇，配成浓度为5%的不同比例的己烷溶液，于1995年10月19～28日在北京大兴县南郊农场的桃园进行了引诱蚜虫的试验。各种比例的性信息素诱捕器均能引诱到桃蚜Myzus persicae (Sulzer)雄蚜、桃粉大尾蚜Hyaloptera amygdali Blanchard雄蚜以及少量的桃蚜产雌性母；荆芥醇和荆芥内酯的比例为1∶1时引诱桃蚜雄蚜的效果最好；单一组分的荆芥醇引诱桃粉大尾蚜雄蚜的效果最好。

Aphids attraction of sex pheromons in peach orchard

(-)-(1R,4aS,7S,7aR)-nepetalactol and (+)-(4aS,7S,7aR)-nepetalactone have been identified in sex pheromones released by a number of aphid species. From 19th to 28th,Oct.,1995, in a peach orchard experiment in Daxing county using white water traps of different ratios of the two components, 96% nepetalactone isolated from Nepeta cataria L.and 67% nepetalactol reduced from nepetalactone with diisobutylaluminium hydride,significantly more male Myzus persicae (Sulzer), male Hyaloptera amygdali Blanchard and gynoparae of M. persicae were caught in pheromone traps than in the control traps. Response of gynoparae was relatively weak than males.Male M. persicae were caught in significantly larger number in trap with ratio 1∶1 than others, and male H. amygdali were caught in significantly larger numbers by nepetalactol alone than by the other combinations.