不同生育期蓖麻叶片乙醇抽提物对小菜蛾幼虫影响  

The effects of alcohol extracts from Ricinus communi leaves at different growth stages on Plutella xylostella larva

作　　者：李瑛[1] 周福才[2] 周桂生[3] 李传明[2,4] 王萍[2] 钦佩[1] 

机构地区：[1]江苏省东台市植保植检站,江苏东台224200 [2]扬州大学园艺与植物保护学院,江苏扬州225009 [3]扬州大学江苏省作物遗传生理重点实验室,江苏扬州225009 [4]江苏里下河地区农业科学研究所,江苏扬州225007

出　　处：《扬州大学学报（农业与生命科学版）》2009年第3期87-90,94,共5页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家“十一五”科技支撑计划项目(2006BAD09A08-03);江苏省科技创新与成果转化专项引导资金资助项目(BN2009017);江苏省农业资源开发科技推广项目(2009KJ-35)

摘　　要：分别用浸有初果期、盛果期、成熟前期的蓖麻叶片乙醇抽提物的滤纸,测定抽提物对小菜蛾幼虫的嗅觉反应;以上述3种抽提物浸泡过的包菜叶片为试验材料,测定抽提物对小菜蛾幼虫的取食行为及存活率的影响。结果表明:小菜蛾对不同生育期蓖麻叶片抽提物有明显的嗅觉反应,其中,对2龄幼虫的驱避率在80%以上,对4龄幼虫的驱避率在65%以上。不同生育期蓖麻叶片抽提物对小菜蛾的驱避作用不同,初果期的驱避作用较弱,成熟前期的作用相对较强。3种抽提物对小菜蛾低龄幼虫的取食量有明显的影响,但对高龄幼虫取食量的影响不明显。蓖麻叶片抽提物对小菜蛾取食行为有明显的影响,与对照相比,在处理过的包菜叶片上,小菜蛾取食活动次数和每次取食活动用于取食的时间减少,平均取食间的间隔时间延长。成熟前期蓖麻叶片的乙醇抽提物对小菜蛾幼虫取食行为的影响明显较初果期强。抽提物对小菜蛾幼虫的存活率无明显的影响。Filter paper soaked with ethanol extracts from the leaves of Ricinus communi taken at early fruiting period,peak fruiting period and pre-mature stage was used to determine the smell response of Plutella xylostella larvae.The cabbage leaves dipped in the extracts were also used to observe the feeding behavior and survival rate of P.xylostella larvae.The smell responses of P.xylostella larvae to extracts of R.communi leaves taken at different growth stages were observed.The repellent rates of the 2th and 4th ...

关 键 词：蓖麻 提取物 小菜蛾 幼虫 嗅觉反应 取食行为 存活率 

分 类 号：S482.3[农业科学—农药学]