Figure 1.

Emission of intact control and P. xylostella-damaged cabbages (cvs Rinda and Lennox) grown at ambient or elevated CO₂ concentration. A and B, Emissions of total MTs (sabinene, limonene, β-pinene + myrcene, 1,8-cineol, α-thujene, and α-pinene; mean + se). C and D, DMNT. E and F, (E,E)-α-farnesene. G and H, (Z)-3-hexenyl acetate (ng cm⁻² h⁻¹) from intact control and P. xylostella-damaged cabbage plants (n = 5) grown at ambient (360 μmol mol⁻¹) or elevated (720 μmol mol⁻¹) CO₂ concentration in experiment 1. P-values indicate the main effect tested by Kruskal-Wallis-test. Different letters above the bars indicate significant differences between the treatments by Tukey or Dunnett T3 post hoc tests.