Table 1.
Responses to Cry1Ac of pink bollworm larvae from a resistant strain (AQ65), a susceptible strain (APHIS-S), and their F1 progeny.
| Strain or Cross | Slope (SE) a | LC50 (95% FL) b | RR c |
|---|---|---|---|
| APHIS-S | 3.78 (0.336) | 0.097 (0.048–0.132) | |
| AQ65 | 1.79 (0.446) | 29.5 (22.4–48.0) | 300 |
| AQ65♀ × APHIS-S♂ | 2.38 (0.203) | 0.454 (0.494–0.623) | 4.7 |
| AQ65♂ × APHIS-S♀ | 2.94 (0.278) | 0.559 (0.397–0.514) | 5.8 |
a Slope of the concentration–mortality line with its standard error in parentheses. b Concentration killing 50% with 95% fiducial limits in parentheses, in μg Cry1Ac per mL diet. c Resistance ratio, the LC50 for AQ65, AQ65♀ × APHIS-S♂ or AQ65♂ × APHIS-S♀ divided by the LC50 for APHIS-S.