Mean quantities (log₁₀ng) of sesquiterpene VOCs and DMNT emitted by maize (<i>Zea mays</i>) seedlings following either <i>cis</i>-jasmone (CJ) or control treatment and then addition of <i>Cicadulina storeyi</i> (adults, n = 9 or nymphs, n = 10) 24 h later.

VOCs were collected after C. storeyi addition during the following time periods: 0–6 h, 6–22 h, 22–30 h, 30–46 h, 46–54 h, 54–70 h and 70–78 h. Data were analysed using a split-plot in time ANOVA. Appropriate means were compared using LSD (5%) values. *For comparisons of treatments with or without CJ. **For all other comparisons. For the 0–6 h collection period, means with superscript letters a and b within the same column are significantly different (P<0.05 LSD).