Insecticide‐impregnated paper assays were used to analyse the inheritance of Deltamethrin resistance (2634X) in a DDT‐pyrethroid cross‐resistant strain of maize weevil, Sitophilus zeamais Mots., from Brazil. At the KD50 the responses of the F1hybrid reciprocal crosses were very different and χ2 analyses of the observed responses of F2 and F1‐backcross progenies provided evidence that a single gene was responsible for resistance. Deltamethrin resistance seems to be controlled by a single recessive sex‐linked gene.
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Guedes et al. (1994) studied this question.
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