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Egyptian Journal of Biological Pest Control

Table 4 Susceptibility of susceptible and Bt Cry1C—tolerant strains (10th generation) of S. littoralis larvae

From: Alterations in the expression of certain midgut genes of Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) larvae and midgut histopathology in response to Bacillus thuringiensis Cry1C toxin

Strain

LC50 (95% FL) (μg/g diet)

Slope ± SE

RR

χ2(df)

Susceptible

1.8950 (1.3193.3-77)

1.489249 ± 0.290369

-

1.761(3)

Tolerant

12.263 (9.433-16.692)

2.029307 ± 0.311965

6.5

1.212(3)

  1. 95% FL 95% fiducial limits, SE standard error, RR resistance ratio, χ2 chi-square, df degree of freedom
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