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西花蓟马对多杀菌素的抗性汰选和遗传方式
引用本文:王泽华,吴青君,徐宝云,张友军.西花蓟马对多杀菌素的抗性汰选和遗传方式[J].昆虫知识,2011,48(3):553-558.
作者姓名:王泽华  吴青君  徐宝云  张友军
作者单位:中国农业科学院蔬菜花卉研究所,北京,100081
基金项目:973项目,北京市自然基金,农业行业科技专项
摘    要:在室内进行了西花蓟马Frankliniella occidentalis(Pergande)种群对多杀菌素的抗性筛选和抗性遗传方式分析。经过2年多的汰选,抗性水平相比较初始种群提高了30倍,与同时测定的敏感品系相比抗性达到80.8倍。抗性遗传方式分析结果表明,正、反交后代显性度分别为0.51和0.43,二者差异不显著,说明西花蓟马对多杀菌素的抗性为常染色体、不完全显性遗传;剂量对数死亡机率值曲线分析结果显示回交后代在死亡率50%处,自交后代在死亡率25%和75%处未出现明显平坡,回交和自交后代实测值卡方检验进一步证实抗性为多基因控制。

关 键 词:西花蓟马  多杀菌素  抗性汰选  抗性遗传

Laboratory selection and inheritance mode of resistance to spinosad in the western flower thrips, Frankliniella occidentalis
WANG Ze-Hua,WU Qing-Jun,XU Bao-Yun,ZHANG YOU-Jun.Laboratory selection and inheritance mode of resistance to spinosad in the western flower thrips, Frankliniella occidentalis[J].Entomological Knowledge,2011,48(3):553-558.
Authors:WANG Ze-Hua  WU Qing-Jun  XU Bao-Yun  ZHANG YOU-Jun
Institution:WANG Ze-Hua WU Qing-Jun XU Bao-Yun ZHANG YOU-Jun(Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China)
Abstract:The response of western flower thrips,Frankliniella occidentalis (Pergande),to selection for resistance to spinosad under laboratory conditions,and the mode of inheritance of spinosad resistance was investigated.After more than 2 years of selection resistance to spinosad in the selected strain increased 30-fold compared to the original strain,and 80.8-fold compared to the susceptible strain.The progeny of reciprocal F1 crosses (resistant male×susceptible female and resistant female×susceptible male) responded similarly in bioassays,with values of 0.51 and 0.42 for D(degree of dominance),respectively,indicating that resistance was autosomal and incompletely dominant.Analysis of dose-response lines indicates that there were no plateaus at 50% mortality of backcross progeny (F1×susceptible strain) and at 25% and 75% mortalities of self-cross of backcross progeny.Chi-square analysis of the resistance of progeny from backcrosses (F1×susceptible strain) and self-cross of backcrosses suggest that resistance to spinosad is probably controlled by several genes.
Keywords:Frankliniella occidentalis  spinosad  laboratory selection  resistance inheritance  
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