Magnitude and dominance of resistance to Cry1Ac in <i>H. armigera</i> associated with cadherin resistance alleles: <i>r</i>₁₅ in the cytoplasmic domain and <i>r</i>₁ in the extracellular region.

aConcentration killing 50% of larvae and 95% fiducial limits (µg Cry1Ac per cm2 diet). bResistance ratio = LC50 of a strain or F1 progeny from a cross divided by LC50 of the susceptible SCD strain. cSurvival at the diagnostic concentration (1 µg Cry1Ac per cm2 diet), n = 48. dh ranges from 0 for completely susceptible to 1 for completely dominant. eh calculated from LC50 values [34]. fh calculated from survival at the diagnostic concentration [34]. gh is calculated only for F1 progeny from crosses between resistant and susceptible strains. hResults pooled from the two reciprocal crosses.