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为探明植物挥发性化合物在卷蛾分索赤眼蜂Trichogrammatoidea bactrae和拟澳洲赤眼蜂Trichogramma con-fusum寄主定向过程中的作用,本研究采用“Y”型嗅觉仪测定了这两种赤眼蜂对五种不同处理芥兰和菜心挥发物的嗅觉反应,结果表明:来自芥兰的完整植株、机械损伤植株、虫害损伤植株、虫菜复合体植株以及菜卵复合体植株的挥发物对卷蛾分索赤眼蜂有显著的吸引用,进入这些处理区的赤眼蜂数量分别占总试验蜂数的70.37%、75.0%、67.74%、68.42%和67.65%,显著高于对照;而其选择上述五种处理的菜心的数量分别占总试验蜂数的70.37%、72.73%、73.91%、70.37%和71.43%,显著高于对照,表明来自菜心各处理的挥发物对卷蛾分索赤眼蜂也具有显著的吸引作用。来自芥兰完整植株、机械损伤植株、虫害损伤植株、虫菜复合体植株及相应处理菜心的挥发物对拟澳洲赤眼蜂无显著吸引作用,进入芥兰和菜心处理区的赤眼蜂数量分别占总试验蜂数的62.5%、50.0%、50.0%、54.55%和60.0%、50.0%、54.84%、54.55%,与对照相比均差异不显著;而其选择芥兰和菜心的菜卵复合体植株的数量分别为72.97%和76.47%,均显著高于对照,表明带小菜蛾卵块的芥兰和菜心植株对拟澳洲赤眼蜂有显著吸引作用。
In order to find out the role of plant volatile compounds in the host orientation of Trichogramma bidera and Trichogramma con-fusum, the “Y” type olfactometer was used to determine the effect of these compounds Trichogramma olivores responded to five different treatments of volatile compounds from Brassica chinensis and Cabernet sauvignon. The results showed that the volatiles from intact plants, mechanical injury plants, insect damaged plants, insect-vegetable complex plants and cabbage egg complex plants from Chinese cabbage Trichogramma was significantly attracted to Trichogramma, and the numbers of Trichogramma were 70.37%, 75.0%, 67.74%, 68.42% and 67.65% of the total, respectively, which were significantly higher than that of the control ; And the number of apricots selected for the above five treatments respectively accounted for 70.37%, 72.73%, 73.91%, 70.37% and 71.43% of the total number of bees, which was significantly higher than that of the control, indicating that the volatile compounds Trichogramma larvae also have a significant attraction. The plants from the whole Chinese cabbage, mechanical injury plants, pest damage plants, insect-plant complex and the corresponding processing cabbage volatiles on the Trichosanthes trilobata no significant attraction, into the Chinese cabbage and Trichogramma treatment plant Trichogramma Accounting for 62.5%, 50.0%, 50.0%, 54.55% and 60.0%, 50.0%, 54.84% and 54.55% of the total number of test bees, respectively, with no significant difference compared with the control The number of cabbage-egg complex plants was 72.97% and 76.47%, respectively, which were significantly higher than that of the control, indicating that cabbage and cabbage plants with the diamondback moth eggs had significant attraction to T. trichocarpa.