Table 2.
In vitro phytotoxic effect of different doses of E. citriodora, L. angustifolia, and P. sylvestris essential oils on Portulaca oleracea, Lolium multiflorum, Echinochloa crus-galli, tomato, and cucumber seed germination.
| Seed Germination (% ± S.E.) | |||||
|---|---|---|---|---|---|
| * Dose | E. citriodora essential oil | ||||
| P. oleracea | L. multiflorum | E. crus-galli | Tomato | Cucumber | |
| Control | 74.0 ± 4.6 a | 65.0 ± 6.9 a | 69.0 ± 2.9 a | 71.0 ± 2.5 a | 99.0 ± 1.0 a |
| 0.125 | 80.0 ± 2.2 a | 67.0 ± 4.4 a | 74.0 ± 3.7 a | 71.0 ± 4.3 a | 98.0 ± 1.2 a |
| 0.25 | 76.0 ± 2.9 a | 52.0 ± 2.0 a | 72.0 ± 2.6 a | 73.0 ± 3.4 a | 95.0 ± 2.2 a |
| 0.5 | 74.0 ± 4.3 a | 58.0 ± 2.6 a | 61.0 ± 4.6 a | 61.0 ± 3.7 a | 97.0 ± 1.2 a |
| 1 | 81.0 ± 6.2 a | 57.0 ± 7.2 a | 72.0 ± 3.7 a | 25.0 ± 11.3 b | 96.0 ± 1.8 a |
| Dose | L. angustifolia essential oil | ||||
| Control | 74.0 ± 3.7 a | 65.0 ± 6.9 a | 71.0 ± 4.3 a | 71.0 ± 2.5 a | 99.0 ± 1.0 a |
| 0.125 | 69.0 ± 5.3 a | 65.0 ± 3.2 a | 71.0 ± 2.8 a | 73.0 ± 4.4 a | 97.0 ± 1.2 a |
| 0.25 | 67.0 ± 2.0 a | 50.0 ± 2.7 a,b | 72.0 ± 2.6 a | 58.0 ± 4.1 a,b | 98.0 ± 2.0 a |
| 0.5 | 66.0 ± 5.8 a | 36.0 ± 8.4 b,c | 72.0 ± 3.4 a | 41.0 ± 13.2 b,c | 97.0 ± 1.2 a |
| 1 | 69.0 ± 3.7 a | 24.0 ± 7.0 c | 58.0 ± 2.6 b | 22.005.8 c | 94.0 ± 1.9 a |
| Dose | P. sylvestris essential oil | ||||
| Control | 75.0 ± 7.1 a | 67.0 ± 2.0 a | 74.0 ± 3.3 a | 68.0 ± 3.4 a | 100.0 ± 0.0 a |
| 0.125 | 74.0 ± 3.7 a | 65.0 ± 8.8 a | 69.0 ± 7.0 a | 67.0 ± 4.4 a | 94.0 ± 2.9 a,b |
| 0.25 | 71.0 ± 2.9 a | 65.0 ± 5.0 a | 74.0 ± 1.9 a | 67.0 ± 4.1 a | 94.0 ± 1.9 a,b |
| 0.5 | 71.0 ± 1.9 a | 58.0 ± 5.2 a | 74.0 ± 4.6 a | 66.0 ± 3.7 a | 95.0 ± 1.6 a,b |
| 1 | 68.0 ± 2.6 a | 51.0 ± 12.8 a | 75.0 ± 5.0 a | 64.0 ± 3.7 a | 90.0 ± 2.3 b |
Values are the mean percentage of five replications ± standard error, after 14 days of incubation. Means followed by different letters in the same column indicate significant difference at p < 0.05, according to T3 Dunnett and Tukey tests. * Dose: µL/mL.