Table 3.
Phytotoxic activity of the essential oils of O. heracleoticum against radicle elongation of R. sativus, S. arvensis and L. multiflorum 120 h after sowing. Results are expressed as the mean of three experiments ± SD.
| Radicle Elongation (cm) | |||
|---|---|---|---|
| S. arvensis | R. sativus | L. multiflorum | |
| H2O | 1.9 ± 1.0 | 2.4 ± 1.0 | 4.9 ± 1.7 |
| OHW | |||
| 1000 µg/mL | 0.0 ± 0.0 * | 0.0 ± 0.0 *** | 0.0 ± 0.0 *** |
| 500 µg/mL | 0.3 ± 0.2 | 1.2 ± 0.2 * | 0.0 ± 0.0 *** |
| 250 µg/mL | 1.4 ± 0.6 | 1.5 ± 0.1 | 0.0 ± 0.0 *** |
| 100 µg/mL | 2.4 ± 1.2 | 1.8 ± 0.4 | 1.8 ± 0.7 |
| OHR | |||
| 1000 µg/mL | 0.0 ± 0.0 * | 0.0 ± 0.0 *** | 0.0 ± 0.0 *** |
| 500 µg/mL | 0.5 ± 0.1 | 0.0 ± 0.0 *** | 0.0 ± 0.0 *** |
| 250 µg/mL | 1.7 ± 1.4 | 1.4 ± 0.3 | 0.0 ± 0.0 *** |
| 100 µg/mL | 2.7 ± 1.5 | 2.2 ± 0.8 | 2.0 ± 0.7 |
* p < 0.05; *** p < 0.001 compared with H2O.