Figure 1. Effect of time in diapause and diet (combined) on the proportion of winter emergence (least squares means from multiple regression model, see text). Standard errors (not shown) associated with proportions were always equal or smaller than 0.06. * Linear contrast showed a significant difference (P < 0.05) between individuals from MOV97-R10 fed Bt and non-Bt diet. ** Linear contrasts showed a significant difference between MOV97 and the F1 progeny or the resistant strains, but no significant differences (P > 0.05) between the F1 progeny and resistant strains.