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Geographic Variation in Susceptibility of Helicoverpa armigera (Lepidoptera: Noctuidae) to Bacillus thuringiensis Insecticidal Protein in China

Geographic Variation in Susceptibility of Helicoverpa armigera (Lepidoptera: Noctuidae) to... Geographic variation in the sensitivity of cotton bollworm to B. thuringiensis insecticide protein CryIA(c) was studied to establish a geographic baseline for comparing the future population responses to the increased use of B. thuringiensis products in agriculture in China. The bollworm populations were collected from 5 ecological cotton areas of China, and the dose responses to CryIA(c) protein of mortality and growth inhibition were evaluated. The ranges of LC50s (50% lethal concentration) resulting in larval mortality and IC50s (50% inhibition concentration) of larvae grown into 3rd instars among different populations were 0.09–9.073 μg/ml and 0.011–0.057 μg/ml, respectively. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Economic Entomology Oxford University Press

Geographic Variation in Susceptibility of Helicoverpa armigera (Lepidoptera: Noctuidae) to Bacillus thuringiensis Insecticidal Protein in China

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Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
ISSN
0022-0493
eISSN
1938-291X
DOI
10.1093/jee/92.2.273
Publisher site
See Article on Publisher Site

Abstract

Geographic variation in the sensitivity of cotton bollworm to B. thuringiensis insecticide protein CryIA(c) was studied to establish a geographic baseline for comparing the future population responses to the increased use of B. thuringiensis products in agriculture in China. The bollworm populations were collected from 5 ecological cotton areas of China, and the dose responses to CryIA(c) protein of mortality and growth inhibition were evaluated. The ranges of LC50s (50% lethal concentration) resulting in larval mortality and IC50s (50% inhibition concentration) of larvae grown into 3rd instars among different populations were 0.09–9.073 μg/ml and 0.011–0.057 μg/ml, respectively.

Journal

Journal of Economic Entomology – Oxford University Press

Published: Apr 1, 1999

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