山胡椒及其挥发物对马铃薯块茎蛾产卵选择的影响

【目的】为了确定山胡椒Lindera glauca(Sieb.Zuce)是否对马铃薯块茎蛾Phthorimaea operculella Zeller的产卵有驱避作用。【方法】利用选择性产卵试验方法在室内分别测定了山胡椒的完整果实、压碎果实、根以及不同浓度(0.25~4.0 g E/m L)的压碎山胡椒果实正己烷提取物对马铃薯块茎蛾产卵选择性的影响;在模拟仓库内测定了压碎的果实对其产卵的影响;进而在室内测定了柠檬醛、沉香醇、香叶醇和α-水芹烯不同浓度(0.00075~0.012 g/L)的溶液对其产卵选择性的影响。【结果】山胡椒完整果实、压碎果实、根在室内对马铃薯块茎蛾产卵具有驱避效果,其中压碎果实的产卵驱避效果最好,20 g压碎果实的产卵驱避率可达93.7%。山胡椒压碎果实正己烷提取物在0.5~4.0 g E/m L的浓度范围内随着浓度的升高,产卵驱避效果逐渐增强。在模拟仓库内20 g压碎的果实产卵驱避率是82.5%;0.003~0.012 g/L的柠檬醛,0.012 g/L沉香醇,0.00075~0.012 g/L的香叶醇,0.003~0.012 g/L的α-水芹烯对马铃薯块茎蛾产卵有显著的驱避效果。【结论】山胡椒及其挥发物对马铃薯块茎蛾产卵有驱避效果。

Effect of Lindera glauca and its volatiles on the oviposition preferences of the potato tuber moth,Phthorimaea operculella

Objectives] To determine whether Lindera glauca (Sieb. Zuce) BL can repel oviposition by Phthorimaea operculella. Methods] The effects of different parts of L. glauca; intact fruit, damaged fruit, roots, and concentrations of hexane extracts from damaged fruit from 0.25 to 4.0 gE/mL, on the oviposition preferences of P. operculella were tested under laboratory conditions. The repellent effect of damaged fruit was also tested in storage. The effects of four volatiles (citral, linalool, geraniol,α-phellandrene) at concentrations from 0.00075 to 0.012 g/L on the oviposition preferences of P. operculella were also tested in the laboratory. Results] Although intact fruit, damaged fruit and roots could all repel oviposition, the oviposition deterrence percentage (ODP) achieved by damaged fruit was higher than that achieved by intact fruit or roots;20 g of broken fruit had an ODP of 93.7%. The repellent activity of hexane extracts from broken fruit increased with concentration. The ODP of 20 g of broken fruit reached 82.5%in storage. Concentrations of 0.003 to 0.012 g/L of citral, 0.012 g/L of linalool, 0.00075 to 0.012 g/L of geraniol, and 0.003 to 0.012 g/L ofα-phellandrene, all had an extremely strong deterrent effect on oviposition. Conclusion] L. glauca and its volatiles have repel oviposition by P. operculella.