Table 4.
Percentage of Inhibition (PI, %) produced by the tested EOs in vapor phase against Monilinia fructicola.
| Essential Oil | PI (%) exerted by EO-VOCs on Monilinia fructicola mycelial growth 5 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 | 62.0 ± 24.0 b, BC | 100 a, A | 100 a, A | – | – | – | – | – |
| O. vulgare 2 | 90.0 ± 1.6 c, A | 96.3 ± 1.4 b, AB | 100 a, A | – | – | – | – | – |
| T. vulgaris 1 | 62.5 ± 10.0 b, BC | 89.3 ± 3.0 a, AB | 100 a, A | – | – | – | – | – |
| T. vulgaris 2 | 84.6 ± 7.3 b, AB | 95.0 ± 1.0 a, AB | 98.9 ± 0.4 a, A | 100 a, A | – | – | – | – |
| T. serpyllum | 72.0 ± 1.7 c, ABC | 84.2 ± 6.1 b, B | 100 a, A | – | – | – | – | – |
| M. alternifolia 1 | 8.9 ± 1.8 g, DE | 31.5 ± 3.9 f, DE | 42.2 ± 2.2 e, B | 57.3 ± 1.2 d, BC | 65.0 ± 0.7 c, C | 83.0 ± 0.8 b, C | 100 a, A | – |
| M. alternifolia 2 | 29.7 ± 3.2 e, D | 33.5 ± 1.0 e, D | 46.3 ± 2.0 d, B | 53.0 ± 4.8 c, BC | 64.3 ± 0.6 b, C | 93.7 ± 1.0 a, B | 100 a, A | – |
| L. officinalis | 18.4 ± 2.7 e, DE | 19.4 ± 0.8 e, EF | 28.9 ± 0.9 d, C | 46.0 ± 0.4 c, CD | 67.1 ± 5.7 b, C | 97.1 ± 1.3 a, B | 100 a, A | – |
| L. hybrida | 11.8 ± 0.8 e, DE | 15.9 ± 1.2 e, F | 27.6 ± 2.5 d, C | 45.8 ± 2.9 c, CD | 77.9 ± 3.4 b, B | 97.8 ± 0.7 a, B | 100 a, A | – |
| C. bergamia | 9.2 ± 0.4 d, DE | 14.6 ± 1.2 ed, F | 18.9 ± 3.5 e, D | 32.5 ± 6.7 d, D | 44.0 ± 2.0 c, D | 75.7 ± 1.5 b, D | 97.6 ± 1.1 a, A | 100 a |
| R. officinalis | 8.4 ± 6.5 d, DE | 6.9 ± 5.9 d, FG | 11.8 ± 0.8 d, E | 27.6 ± 3.8 c, D | 32.7 ± 2.7 c, E | 67.1 ± 7.7 b, E | 91.2 ± 5.1 a, B | 100 a |
| C. zeylanicum | 3.0 ± 1.0 c, E | -1.6 ± 1.8 c, G | 20.6 ± 3.1 c, D | 72.1 ± 21.8 b, B | 99.0 ± 1.7 a, A | 100 a, A | – | – |
| MIX | 53.8 ± 6.7 b, C | 66.1 ± 12.3 a, C | 97.0 ± 0.8 a, A | 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).