【摘要】 研究了苦槛蓝挥发油对小菜蛾的生物活性 .结果表明 ,苦槛蓝挥发油对小菜蛾成虫具有强烈的驱避作用 .小菜蛾成虫在四臂嗅觉仪中首选次数、平均停留时间从多到少的顺序是 3臂、1臂、4臂、2臂 ,具有远离处理臂的趋势 ,其中雄虫比雌虫明显 ,且气体流速为 2 0 0ml·min-1时驱避作用最为显著 .按方法 3处理第一天对小菜蛾成虫的产卵驱避率 (OCR)、干扰作用控制指数 (IIPC)分别为 94 .4 8%、0 .0 5 5 2 .此外 ,从挥发油中分离到一个液体成分 ,经鉴定确定为myoporone(C15H2 2 O3 ) .更多还原

【Abstract】 This study showed that the volatile oils from Myoporum bontioides had a significant repellent action on Plutella xylostella .When Plutella xylostella adults entered into the 4-arm selective olfactometer,the preferred times and average staying duration,in the order from more to less,were 3,1,4,and 2 arms,which showed a tendency of keeping away from the treatment arms. The males were more sensitive to the volatile oils than the females,when the velocity of flow was 200 ml·min -1 . On the first day of the 3rd bioassay,the oviposition deterrent rate and IIPC of the volatile oils on Plutella xylostella adults was 94.48% and 0.0552,respectively. A liquid component of the volatile oils from Myoporum bontioides was isolated,purified,and identified as myoporone.更多还原