Using an F-2 screen to search for resistance alleles to Bacillus thuringiensis toxin in European corn borer (Lepidoptera : Crambidae). Andow, D., A., Alstad, D., N., Pang, Y., H., Bolin, P., C., & Hutchison, W., D. Journal of Economic Entomology, 91(3):579-584, 1998. abstract bibtex We present an application of an F-2 screening method for recovering and estimating the frequencies of rare alleles that confer insect resistance to a transgenic corn variety producing Bacillus thuringiensis Berliner crystal protein toxin (Bt corn). Based on a sample of 91 female Ostrinia nubilalis (Hubner) we show with 95% confidence that the frequency of B. thuringiensis resistance alleles from a wild Minnesota population is <0.013. This is an upper limit to the estimated allele frequency and does not provide clear evidence that 1 of the assumptions of the refuge plus high-dose strategy will or will not be met. With additional sampling, a more precise estimate of resistance allele frequency could be obtained that would clearly support or refute 1 of the assumptions of the refuge plus high-dose strategy. Variable costs of the screening method were $19.70 per female line, but these could be reduced by improved collecting, rearing; and handling methods.
@article{
title = {Using an F-2 screen to search for resistance alleles to Bacillus thuringiensis toxin in European corn borer (Lepidoptera : Crambidae)},
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year = {1998},
pages = {579-584},
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abstract = {We present an application of an F-2 screening method for recovering and estimating the frequencies of rare alleles that confer insect resistance to a transgenic corn variety producing Bacillus thuringiensis Berliner crystal protein toxin (Bt corn). Based on a sample of 91 female Ostrinia nubilalis (Hubner) we show with 95% confidence that the frequency of B. thuringiensis resistance alleles from a wild Minnesota population is <0.013. This is an upper limit to the estimated allele frequency and does not provide clear evidence that 1 of the assumptions of the refuge plus high-dose strategy will or will not be met. With additional sampling, a more precise estimate of resistance allele frequency could be obtained that would clearly support or refute 1 of the assumptions of the refuge plus high-dose strategy. Variable costs of the screening method were $19.70 per female line, but these could be reduced by improved collecting, rearing; and handling methods.},
bibtype = {article},
author = {Andow, D A and Alstad, D N and Pang, Y H and Bolin, P C and Hutchison, W D},
journal = {Journal of Economic Entomology},
number = {3}
}
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