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作 者 ：吴孔明,刘芹轩

期 刊 ：生态学报 1994年 14卷 4期 页码：SELECTION OF R-STRAIN AND GENTIC ANALYSIS

关键词：朱砂叶螨；氧化乐果；遗传方式。；

Keywords:carmine spider mite, omethoate, mode of inheritance。,

摘 要 ：对采自棉田的朱砂叶螨（Ｔｅｔｒａｎｙｃｈａｓｃｉｎｎａｂａｒｉｎｕｓ）种群使用氧化乐果选择压（６６．６７－１３３．３３μｌ／ｌ）１６次筛选后，抗氧化乐果由８．３３倍上升到３６．９３倍。利用此抗性品系（Ｒ）和来自河南省固始县的敏感品系（Ｓ）杂交和回交，研究了朱砂叶螨抗氧化乐果的遗传方式。正交和反交（ＳＲ和ＲＳ）Ｆ＿１代的ＬＣ－Ｐ线介于Ｓ与Ｒ之间偏向Ｒ方，显性系数Ｄ＿（ＳＲ）和Ｄ＿（ＲＳ）分别为０．５６７９和０．５６５９，表明抗性是由不完全显性基因控制。对Ｆ＿１杂合子与亲本的回交（ＳＲ＿♀×Ｓ＿♂）Ｆ＿２代测定表明抗性由单个基因控制。

Abstract:n omethoate-resistant strain of carmine spider mite(Tetranvchus cinnabarinus Boisdu-val)was obtained by laboratory selection of a colony collected from Henan cotton field after16 selections with omethoate in a concentration ranging from 66.67 to 133.33(μl/L)during16 generations and got a resistance to this insecticide increased from 8. 33 folds(before selec-tion)to about 36.93 folds。This was compared with a susceptible population collected fromGushi county in Henan province to ensure a homogeneous colony fo...

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