Relative amounts of main floral VOCs emitted from noninfested and M. sexta-infested N. suaveolens plants. Tests were performed using noninfested plants (black bars) and infested plants (spotted bars) in two consecutive flowering periods. For infestation, first instar M. sexta larvae were introduced to green leaves at 6 pm on the day of anthesis. The total amount of selected VOC was set at 100%. n = 6; data = means ± se; asterisks mark significance (α = 0.05).