Abstract
Out of a strain, resistant to organophosphorous insecticides, a dominant factor has been isolated by repeated backcrossings with a susceptible strain under selection pressure. This factor, calledOP, gives a large resistance to parathion and a much smaller resistance to demeton-S-methyl. Modifiers toOP increase the demeton-S-methyl resistance to a high level. Evidence is given that the resistance to the mentioned insecticides of the well known Leverkusen resistant strain has a similar inheritance.
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Abbreviations
- OP:
-
organophosphorus
- R:
-
resistant
- S:
-
susceptible
References
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Schulten, G.G.M. Genetics of resistance to parathion and demeton-S-methyl inTetranychus urticae Koch (Acarina). Genetica 37, 207–217 (1966). https://doi.org/10.1007/BF01547132
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DOI: https://doi.org/10.1007/BF01547132