Total amount of BVOCs emitted (µmol m2) and relative percentage (%) of the major ions representing the BVOCs blend emitted after transition from light to dark conditions in Dactlylis glomerata, Quercus ilex, Populus alba intact leaves and in Populus alba leaves after the petiole has been excised.

Means ± SE are shown (n = 4). Differences between means within the same column were statistically assessed with a Tukey's post hoc test (P<0.05).