Table 3.
Percentage of Inhibition (PI, %) produced by the tested EOs in vapor phase against Botrytis cinerea.
| Essential oil | PI (%) exerted by EO-VOCs on Botrytis cinerea mycelial growth 3 days post inoculation. EO concentrations are expressed in μL/L | |||||||
|---|---|---|---|---|---|---|---|---|
| 2.82 | 5.64 | 11.36 | 22.73 | 45.45 | 90.91 | 181.82 | 363.64 | |
| O. vulgare 1 | 67.6 ± 2.0 d, AB | 82.9 ± 2.1 c, ABC | 94.4 ± 1.9 b, AB | 100 a, A | 100 a, A | – | – | – |
| O. vulgare 2 | 87.0 ± 3.7 b, A | 89.1 ± 2.2 b, AB | 97.5 ± 0.6 a, A | 100 a, A | 100 a, A | – | – | – |
| T. vulgaris 1 | 50.9 ± 2.8 d, BC | 71.8 ± 3.8 c, C | 86.3 ± 4.2 b, B | 97.9 ± 0.7 a, AB | 100 a, A | 100 a, A | – | – |
| T. vulgaris 2 | 91.9 ± 0.6 d, A | 93.7 ± 1.1 c, A | 95.4 ± 0.6 b, A | 100 a, A | 100 a, A | 100 a, A | – | – |
| T. serpyllum | 66.9 ± 2.2 d, AB | 78.5 ± 5.5 c, BC | 90.5 ± 1.1 b, AB | 100 a, A | 100 a, A | 100 a, A | – | – |
| M. alternifolia 1 | 21.1 ± 1.1 d, D | 19.7 ± 1.1 d, EF | 16.0 ± 5.9 d, FG | 23.6 ± 3.9 d, E | 43.5 ± 1.7 c, E | 73.6 ± 4.4 b, D | 94.6 ± 1.4 a, B | 100 a |
| M. alternifolia 2 | 29.6 ± 23.3 d, CD | 48.2 ± 13.9 cd, D | 55.6 ± 2.1 cd, D | 66.9 ± 9.8 bc, C | 85.9 ± 1.2 ab, B | 95.4 ± 0.6 ab, AB | 100 a, A | 100 a |
| L. officinalis | 18.7 ± 3.0 e, D | 16.7 ± 5.6 e, EF | 16.0 ± 0.7 e, FG | 36.8 ± 3.9 d, D | 60.6 ± 2.8 c, D | 90.2 ± 0.9 b, BC | 100 a, A | 100 a |
| L. hybrida | 24.5 ± 0.4 e, D | 27.3 ± 1.7 e, EF | 23.1 ± 4.6 e, F | 36.8 ± 2.5 d, D | 69.9 ± 1.1 c, C | 90.0 ± 3.1 b, BC | 99.8 ± 0.4 a, A | 100 a |
| C. bergamia | 24.1 ± 2.8 e, D | 28.9 ± 0.4 de, E | 35.2 ± 2.9 cd, E | 40.5 ± 1.4 c, D | 45.1 ± 6.7 c, E | 84.0 ± 6.7 b, C | 96.1 ± 0.4 a, B | 100 a |
| R. officinalis | 15.0 ± 0.4 e, D | 13.2 ± 4.2 e, F | 11.3 ± 0.8 de, G | 14.8 ± 0.8 de, E | 20.8 ± 1.4 d, F | 41.3 ± 2.4 c, E | 78.4 ± 3.5 b, C | 100 a |
| C. zeylanicum | 37.9 ± 19.2 c, CD | 43.9 ± 2.0 c, D | 69.9 ± 0.4 b, C | 89.6 ± 3.6 ab, B | 100 a, A | – | – | – |
| MIX | 78.8 ± 4.1 c, A | 86.6 ± 2.3 b, AB | 91.6 ± 1.7 b, AB | 98.7 ± 1.1 a, AB | 100 a, A | – | – | – |
The results are expressed as the mean ± standard deviation, r=3. The statistical analyses were carried out using one-way analysis of variance (ANOVA), followed by Tukey’s post hoc test (p ≤ 0.05) or non-parametric Kruskal–Wallis H-test, followed by Mann-Whitney U-test (p ≤ 0.05). Different lower-case letters indicate statistical differences between concentrations of the same EO (horizontal rows). Different upper-case letters indicate statistical differences between the same concentration of different EOs (vertical columns).