山楂叶螨对螺螨酯的抗药性选育及现实遗传力  

Realized Heritability and Laboratory Resistance Selection of Amphitetranychus viennensis to Spirodiclofen

作　　者：封云涛[1] 郭晓君[1] 庾琴[1] 张润祥[1] 

机构地区：[1]山西省农业科学院植物保护研究所,农业有害生物综合治理山西省重点实验室,太原030031

出　　处：《农药》2017年第2期148-150,共3页Agrochemicals

基　　金：山西省农业科学院农业科技创新研究课题(ZDSYS1508)

摘　　要：[目的]预测山楂叶螨对螺螨酯产生抗性的速度。[方法]以杀死种群30%~70%剂量为选择压,在室内对山楂叶螨敏感种群进行抗性汰选。[结果]山楂叶螨幼螨对螺螨酯抗性发展缓慢,选育至第18代获得抗性指数为7.41的抗性种群;山楂叶螨对螺螨酯抗性现实遗传力为0.1281,在致死率为50%~90%选择压力下,预计山楂叶螨对螺螨酯抗性增长10倍,需要10.34~22.99代。[结论]汰选18代后,山楂叶螨幼螨对螺螨酯产生了明显抗性,山楂叶螨对螺螨酯存在一定抗性风险。[Aims] The study aims to monitor the resistance rate ofAmphitetranychus viennensis Zacher to spirodiclofen. [Methods] A susceptible strain of A. viennensis under pressure of killing about 30-70% population with spirodiclofen was selected in laboratory. [Results] The results showed that the resistance developed slowly to spirodiclofen. After 18 cycles of selection, the resistance ratio of selected population was 7.41. The realized heritability was 0.1281, it required 10.34-22.99 generations for A. viennensis to obtain 10 fold increases in resistance ratio under selective pressure of 50-90% mortality for each selective generation. [Conclusions] After selected 18 generations, the resistance of larvaes has already formed. A. viennensis might have a certain risk to develop resistance to spirodiclofen.

关 键 词：山楂叶螨 螺螨酯 抗性选育 现实遗传力 

分 类 号：S433.7[农业科学—农业昆虫与害虫防治]