Additional file 1: Figure S1. Contents of volatiles from the lavender with 8 mM MeJA. (a) the contents of β-myrcene, β-cis-ocimene and caryophyllene in lavender sepal. (b) the contents of β-myrcene, β-cis-ocimene and caryophyllene in lavender leaf. Values shown are mean ± SD of three replicates. All data are given as the means ± SD (n = 3), *p < 0.05; **p < 0.01; ***p < 0.001; Student’s t test