Frequency of alleles conferring resistance to a Bacillus thuringiensis toxin in a Philippine population of Scirpophaga incertulas (Lepidoptera: Pyralidae)

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dc.contributor.authorCohen, M. B.
dc.contributor.authorAndow, D. A.
dc.contributor.authorRomena, A. M.
dc.contributor.authorGould, F.
dc.contributor.authorBentur, J. S.
dc.date.accessioned2025-05-01T12:01:47Z
dc.date.available2025-05-01T12:01:47Z
dc.date.issued2000
dc.descriptionAbstract: Using the F-2 screen methodology, we estimated the frequency of alleles conferring resistance to the CrylAb toxin of Bacillus thuringiensis Berliner in a Philippine population of the stem borer Scirpophaga incertulas (Walker). Evaluation of >450 isofemale lines for survival of F-2 larvae on crylAb plants did not detect the presence of an allele conferring a high level of resistance. The frequency of such an allele in the sampled population was conservatively estimated to be <3.6 X 10(-3) with 95% confidence and a detection probability of 94%. However, there was evidence of the presence of alleles conferring partial resistance to CrylAb. The frequency of alleles for partial resistance was estimated as 4.8 X 10(-3) with a 95% CI between 1.3 X 10(-3) and 1.04 X 10(-2) and a detection probability of 94%. Our results suggest that the frequency of alleles conferring resistance to CrylAb in the population of S. incertulas sampled is not too high to preclude successful implementation of the high dose/refuge resistance management strategy.
dc.identifier.doihttps://doi.org/10.7939/R3GF0N030
dc.language.isoen
dc.relation.isversionofBentur, J. S., Andow, D. A., Cohen, M. B., Romena, A. M., & Gould, F. (2000). Frequency of alleles conferring resistance to a Bacillus thuringiensis toxin in a Philippine population of Scirpophaga incertulas (Lepidoptera: Pyralidae). Journal of Economic Entomology, 93(5), 1515-21. DOI: 10.1603/0022-0493-93.5.1515.
dc.rights© 2000 Entomological Society of America. This article is the copyright property of the Entomological Society of America and may not be used for any commercial or other private purpose without specific written permission of the Entomological Society of America.
dc.subjectBacillus thuringiensis
dc.subjectBt rice
dc.subjectScirpophaga incertulas
dc.subjectF2 screen
dc.subjectBt resistance
dc.titleFrequency of alleles conferring resistance to a Bacillus thuringiensis toxin in a Philippine population of Scirpophaga incertulas (Lepidoptera: Pyralidae)
dc.typehttp://purl.org/coar/resource_type/c_6501 http://purl.org/coar/version/c_970fb48d4fbd8a85
ual.jupiterAccesshttp://terms.library.ualberta.ca/public

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