Monitoring and management strategy for Helicoverpa armigera resistance to Bt cotton in China.
The cotton bollworm, Helicoverpa armigera, is one of the most important insect pests in cotton growing regions of China. Transgenic cotton that expresses a gene derived from the bacterium Bacillus thuringiensis (Bt) has been deployed for combating cotton bollworm since 1997. Natural refugees derived from the mixed planting system consisting of cotton, corn, soybean, vegetables, peanut and others on single-family farms of a small scale were used for delaying the evolution of resistance to Bt cotton. Susceptibility of H. armigera field populations to the Bt insecticidal protein Cry1Ac was monitored from 1997 to 2006. The results indicate that the field populations are still susceptible to Cry1Ac, and monitoring indication no apparent shifts in susceptibility in field populations of this important pest.
Wu
Kongming
K
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China. kmwu@ippcaas.cn
D000818:Animals; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins / Q000494:pharmacology; D001427:Bacterial Toxins / Q000494:pharmacology; D004731:Endotoxins / Q000494:pharmacology; D004784:Environmental Monitoring / Q000379:methods*; D003368:Gossypium / Q000235:genetics* / Q000382:microbiology; D006460:Hemolysin Proteins / Q000494:pharmacology; D007305:Insecticide Resistance / Q000187:drug effects* / Q000235:genetics; D007306:Insecticides / Q000494:pharmacology; D009036:Moths / Q000187:drug effects* / Q000235:genetics / Q000254:growth & development; D010572:Pest Control, Biological / Q000379:methods*; D030821:Plants, Genetically Modified
D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004731:Endotoxins; D006460:Hemolysin Proteins; D007306:Insecticides; C030956:insecticidal crystal protein, Bacillus Thuringiensis