Table 3.
Biological activity of essential oils of Salvia africana, Salvia elegans, Salvia greggii, Salvia mellifera and Salvia munzii against radical elongation of Raphanus sativus and Lepidium sativum, 120 h after sowing. Data are expressed in cm. Results are the mean of three experiments ± SD.
| Raphanus sativus Radical elongation ± S.D | |||||
|---|---|---|---|---|---|
| Doses | Salvia africana | Salvia elegans | Salvia greggii | Salvia mellifera | Salvia munzii |
| Control | 3.4 ± 2.0 | 3.4 ± 2.0 | 3.4 ± 2.0 | 3.4 ± 2.0 | 3.4 ± 2.0 |
| 0.06 μg/mL | 2.6 ± 1.0 | 2.7 ± 1.3 | 3.4 ± 1.9 | 2.4 ± 1.1* | 2.1 ± 1.3** |
| 0.125 μg/mL | 3.2 ± 1.6 | 2.1 ± 0.9** | 1.9 ± 1.3 | 2.6 ± 1.4 | 2.3 ± 0.8** |
| 0.25 μg/mL | 2.5 ± 1.5 | 1.9 ± 1.1** | 2.7 ± 1.6 | 2.9 ± 1.7 | 1.9 ± 1.1** |
| 0.625 μg/mL | 3.1 ± 2.0 | 1.2 ± 0.9*** | 2.2 ± 1.2* | 2.2 ± 0.9** | 2.1 ± 1.2** |
| 1.25 μg/mL | 2.5 ± 1.4 | 1.4 ± 0.6*** | 1.3 ± 0.5*** | 1.9 ± 1.4** | 1.2 ± 0.7*** |
| Lepidium sativum Radical elongation ± S.D | |||||
| Doses | Salvia africana | Salvia elegans | Salvia greggii | Salvia mellifera | Salvia munzii |
| Control | 2.5 ± 0.9 | 2.5 ± 0.9 | 2.5 ± 0.9 | 2.5 ± 0.9 | 2.5 ± 0.9 |
| 0.06 μg/mL | 4.1 ± 2.4** | 1.7 ± 0.8** | 2.4 ± 0.9 | 2.3 ± 0.7 | 2.3 ± 0.7 |
| 0.125 μg/mL | 2.6 ± 0.8 | 1.1 ± 0.8*** | 2.9 ± 1.5 | 3.3 ± 1.9 | 2.1 ± 0.9 |
| 0.25 μg/mL | 2.4 ± 0.9 | 0.8 ± 0.4*** | 2.5 ± 0.9 | 2.4 ± 1.8 | 0.8 ± 0.6*** |
| 0.625 μg/mL | 2.6 ± 0.9 | 0.0 ± 0.0*** | 2.5*** | 2.3 ± 0.9 | 0.0 ± 0.0*** |
| 1.25 μg/mL | 2.6 ± 1.1 | 0.0 ± 0.0*** | 0.0 ± 0.0*** | 2.6 ± 1.5 | 0.0 ± 0.0*** |
Note: * p < 0.05; ** p < 0.01; *** p < 0.001 vs. control.