Table 1. ANOVA of larval survival for Bt resistant P. xylostella, Bt susceptible P. xylostella and their heterozygotes grown on two Brassica spp. of varying suitability.
| d.f. | Deviance | Resid. d.f. | Resid. dev. | F | |
|---|---|---|---|---|---|
| Null model | 144 | 1817.5 | |||
| Plant species | 1 | 482.1 | 143 | 1335.4 | 160.4*** |
| Population | 2 | 131.8 | 141 | 1203.6 | 22.0*** |
| Treatment | 2 | 677.2 | 140 | 526.4 | 225.3*** |
| PlantXpopn | 1 | 37.4 | 138 | 495.0 | 5.21** |
| PlantXtrtmt | 4 | 35.7 | 137 | 461.0 | 11.36*** |
| PopnXtrtmt | 2 | 51.8 | 135 | 410.9 | 8.33*** |
| PlantXpopnXtrtmnt | 4 | 10.5 | 133 | 405.2 | 0.95 |
Abbreviation: ANOVA, analysis of variance.
Data are logit-transformed survival (neonate–adult), the analysis used a generalized linear model with correction for overdispersion. Significance terms: **P<0.01; ***P<0.001.