Table 3. Phytotoxic activities of compounds 1–7 on the radicle growth of E. crusgalli and A. theophrasti.
| Compound | E. crusgalli | A. theophrasti |
|---|---|---|
| 1 | 25.31 ± 4.78 | 73.13 ± 1.60 |
| 2 | 24.69 ± 3.96 | NI |
| 3 | NIb | NI |
| 4 | 65.25 ± 4.12 | 92.68 ± 2.44 |
| 5 | 45.74 ± 7.90 | NI |
| 6 | 46.44 ± 4.73 | NI |
| 7 | 11.38 ± 6.00 | 10.33 ± 5.09 |
| 2, 4-Da | 100.00 ± 0.00 | 100.00 ± 0.00 |
Notes:
Results are presented as the inhibition rate % (mean ± standard error).
a
2,4-D as the positive control of phytotoxic activity.
b
“NI” means not inhibited; the concentration for the test is 100 μg/mL.