Fig. 4 in Glandular trichome-derived sesquiterpenes of wild tomato accessions (Solanum habrochaites) affect aphid performance and feeding behavior

Fig. 4. Effect of pure β-caryophyllene and α-humulene on M. euphorbiae feeding performance (A–C) and choice behavior (D). Different amounts of a mix of pure β-caryophyllene and α-humulene (3:1 ratio) were added to the feeding diet. The data in (A), (B), and (C) show the comparison of Kaplan-Meier survival curves (logrank test, α =0.05), gel saliva density (Tukey's HSD, α =0.05), and number of honeydew drops (ANOVA, α = 0.05), respectively, upon addition of different amounts of pure sesquiterpenes to the artificial diet. The data in (D) represent the behavioral responses of aphid alatae to odors from leaves of c.v. M82 alone (right bars) or from leaves of c.v. M82 leaves in combination with different amounts of a mix of pure β-caryophyllene and α-humulene (left bars) (Chi-square goodness of fit; *, P <0.05; **, P <0.01).