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Table 1 Resistance development in Spodoptera littoralis laboratory selected line against Cry1C toxin

From: Bacillus thuringiensis Cry1C resistance development and its processing pattern in Egyptian cotton leaf worm: Spodoptera littoralis (Boisd.) (Lepidoptera:Noctuidae)

GenerationLC50 (μg/g diet)95% confidence limitSlope ± SeResistance ratio (RR)
F10.170.11–0.241.39 ± 0.16 
F32.402.06–3.012.87 ± 0.5914.12
F63.742.84–5.351.80 ± 0.3722.00
F95.394.33–7.612.33 ± 0.4731.71
F125.464.75–6.602.79 ± 0.4732.12
  1. RR resistance ratio (LC50 of resistance/LC50 of F1 strain)