Figure 3.
Degradation of P. xylostella-induced cabbage VOCs by O3: (a) relative reduction (mean ± se) in VOC concentrations and (b) changes in relative blend compositions after exposure to different O3 concentrations. Asterisks indicate a significant reduction at each O3 level (na: no statistical analysis because of zero-inflated data distribution). (E)-DMNT: (E)-4,8-dimethyl-1,3,7-nonatriene. *P ≤ 0.05.