| seasonal expression profiles of insecticidal protein and control efficacy against helicoverpa armigera for bt cotton in the yangtze river valley of china. | seasonal levels of bacillus thuringiensis (bt) insecticidal protein and its control efficacy against helicoverpa armigera (hübner) in bt transgenic cotton gk19 (carrying a cry1ac/cry1ab fused gene) and bg1560 (carrying a cry1ac gene) were investigated in tianmen county, hubei province, located in the yangtze river valley of china, in 2001 and 2002. the results showed that the toxin content in bt cotton changed significantly over time, and that the structure, growth stage, and variety were signif ... | 2005 | 15765683 |
| effects of spinosad on helicoverpa armigera (lepidoptera: noctuidae) from china: tolerance status, synergism and enzymatic responses. | spinosad is increasingly used in pest management programmes, and resistance to it has been detected in recent years. however, there is no report on the susceptibilities of field populations of helicoverpa armigera (hübner) from china. furthermore, the impact of spinosad on metabolic enzymes in this pest remains unknown. | 2009 | 19533589 |