10种寄主植物挥发物对马铃薯块茎蛾产卵的引诱作用

为了筛选寄主植物挥发物中引诱马铃薯块茎蛾产卵的活性成分,在室内利用选择性产卵试验方法分别测定了寄主植物的10种挥发物：α-蒎烯、β-蒎烯、α-石竹烯、β-石竹烯、P-聚伞花素、柠檬烯、壬醛、月桂烯、α-松油烯和烟碱各自不同浓度（0.00075～0.012g.L-1）的溶液对马铃薯块茎蛾产卵选择的影响。结果表明：α-蒎烯、α-石竹烯、β-石竹烯、柠檬烯、月桂烯和烟碱均在浓度范围内（0.00075～0.012g.L-1）分别对马铃薯块茎蛾的产卵有极显著的引诱作用;β-蒎烯、α-松油烯在浓度范围（0.00075～0.012g.L-1）内分别对马铃薯块茎蛾的产卵有显著的引诱作用;P-聚伞花素、壬醛在浓度范围（0.0015～0.012 g.L-1）内对马铃薯块茎蛾的产卵有极显著的引诱作用。本文供试的10种挥发物均对马铃薯块茎蛾有产卵引诱效果。

Oviposition Attraction Effect of Ten Host-plant Volatiles on Potato Tuber Moth, Phthorimaea operculeUa

To determine the oviposition attractants from host-plant volitiles for Phthorimaea operculella, oviposition responses to different concentration （0.00075--0.012 g-L-1） of 10 volatiles from host-plants of P. operculella were investigated by choice test in the laboratory. The results indicated that, a-pinene, a-caryophyllene, β-caryophyllene, limonene, β-myrcene, and nicotine each significantly stimulated oviposition in P. operculella at concentrations of 0.00075--0.012 g.L-1. Each of β-pinene and a-terpinene had significant oviposition attraction effect at concentrations of 0.00075--0.012 g.L-1. And, P-cymene and nonanal each had extremely significant attractive effect on ovipostion at concentrations of 0.0015--0.012 g.L-1. Therefore, all the ten volatiles showed attractive effect on oviposition for P. operculella.