Table 5. Reversibility of the phytotoxic effects on the germination of two agricultural weed species pre-treated with different VOCs and then transferred to water.
Data are expressed as percentages relative to the control ± SD.
| Compound | Pre-treated concentration (ppm) |
Germination (% ± S.D.) | |
|---|---|---|---|
| Amaranthus retroflexus | Digitaria sanguinalis | ||
| Linalool |
6.25 | # | # |
| 12.5 | # | # | |
| 18.75 | 60.0 ± 14.1 | 2.6 ± 5.3 | |
| 25 | 67.5 ± 20.6 | 7.9 ± 10.1 | |
| Terpinen-4-ol | 6.25 | # | # |
| 12.5 | # | # | |
| 18.75 | 60.0 ± 8.2 | 5.3 ± 10.5 | |
| 25 | 45.0 ± 36.9 | 13.2 ± 13.2 | |
| α-Terpineol | 6.25 | # | 26.3 ± 13.6 |
| 12.5 | 60.0 ± 24.5 | 18.4 ± 17.9 | |
| 18.75 | 57.5 ± 20.6 | 7.9 ± 10.1 | |
| 25 | 62.5 ± 12.6 | 10.5 ± 14.9 | |
| Verbenone | 6.25 | 52.0 ± 25.0 | # |
| 12.5 | 42.5 ± 25.0 | 42.1 ± 14.9 | |
| 18.75 | 50.0 ± 16.3 | 13.2 ± 5.3 | |
| 25 | 40.0 ± 8.2 | 10.5 ± 8.6 | |
| Eugenol | 6.25 | # | # |
| 12.5 | # | # | |
| 18.75 | 78.9 ± 6.1 | 10.5 ± 8.6 | |
| 25 | 97.4 ± 10.1 | 5.3 ± 6.1 | |
# Concentrations for which the minimum number of ten non-germinated seeds for the reversibility bioassay was not achieved