Figure 4.

Profile of terpenoids from leaves of BAW infested plants (A) and control plants (B) by headspace volatile collection and GC-MS analysis. 1, Limonene; 2, β-Ocimene; 3, Linalool; 4, β-Elemene; 6, E-β-Caryophyllene; 7, α-Humulene; 8, α-Bergamotene; 9, Germacrene D; 10, α-Farnesene; 11, Elemol; 12, Hedycaryol; 13, γ-Eudesmol; 14, β-Eudesmol; and 15, α-Eudesmol. Unlabeled peaks are not terpenoids. The internal standard is represented by IS. The chemical structure of terpenoid compounds specifically induced by BAW infestation (C).