荧光增白剂对春尺蠖核型多角体病毒的增效作用研究

Synergism of Fluorescent Brightener on Nuclear Type Polyhedron Virus of Apocheima cinerarius Erschoff

以荧光增白剂VBL作为春尺蠖核型多角体病毒（AciNPV）的增效剂。对春尺蠖2～3龄幼虫进行生物测定，试验结果表明，浓度为1．0％（W／V）的荧光增白剂VBL对春尺蠖核型多角体病毒有显著的增效作用。荧光增白剂VBI。的加入不仅将春尺蠖死亡率提高了20％～35％，而且使春尺蠖死亡高峰期提前了1d以上，半致死时间（LT50）提前了2d，AciNPV的半致死浓度（LC50）降低了22倍多，有效地降低了AciNPV的施用浓度。

The biological determination of 2 or 3 larvas of Apocheima cinerarius Erschoff was conducted, taking fluorescent brightener VBL as synergist of Apocheirna cinerarius Erschoff＇s nuclear type polyhedron virus （AciNPV） . The findings shows that Fluorescent brightener VBL whose concentration is 1% （W/V） has a great potentiation of AciNPV. The test result indicates that VBL join will not only make the Apocheirna cinerarius Erschoff＇s death rate raise by 20%-35%, but also will make Apocheirna cinerarius Erschoff＇s fastigium of death go more than 1 d ahead of time,and the lethal time（LT40） go 2 d ahead of time,AciNPV＇s mid lethal concentration （LC40）have reduced more than 22 times,so that it has effectively reduced AciNPV＇s use concentration.