Table 1. Responses to Cry1Ac of pink bollworm larvae resistant strain (Bt4R) selected on both Bt cotton and artificial diet and the unselected parent strain (WCRL).
| Strain | n | Slope (SE) | LC50 (95% FL)1 | RR2 |
|---|---|---|---|---|
| Bt4R | 450 | 1.5 (0.27) | 61 (34–89) | 240 |
| WCRL | 425 | 1.2 (0.17) | 0.25 (0.13–0.40) | - |