Table 4.
Effect of different extracted IAA concentrations on the seed germination parameters of sweet basil (O. basilicum)
| IAA concentration (ppm) |
Germination percentage (%) |
Germination initial time (day) |
speed of germination (seed /day) | Mean germination time (day) | Days to 50% germination | Coefficient velocity of germination (%) |
Root length (cm) |
|---|---|---|---|---|---|---|---|
| 0 | 52 ± 2.0d | 7.2 ± 0.2a | 1.21 ± 0.06e | 8.89 ± 0.08a | 11.6 ± 0.24a | 11.24 ± 0.10d | 0.72 ± 0.02f |
| 25 | 69 ± 1.0c | 6.0 ± 0.0b | 1.75 ± 0.02d | 8.24 ± 0.09b | 9.0 ± 0.0b | 12.14 ± 0.13c | 1.23 ± 0.10e |
| 50 | 79 ± 4.0b | 5.0 ± 0.0c | 2.19 ± 0.14c | 7.68 ± 0.15c | 8.2 ± 0.20c | 13.04 ± 0.27b | 2.07 ± 0.06c |
| 75 | 83 ± 2.5b | 4.2 ± 0.2d | 2.64 ± 0.13b | 7.02 ± 0.11d | 7.2 ± 0.20d | 14.26 ± 0.23a | 2.54 ± 0.07b |
| 100 | 95 ± 1.6a | 4.0 ± 0.0d | 3.04 ± 0.05a | 6.95 ± 0.09d | 6.8 ± 0.20d | 14.41 ± 0.19a | 3.49 ± 0.07a |
| 150 | 71 ± 1.9c | 5.0 ± 0.0c | 1.99 ± 0.04cd | 7.61 ± 0.07c | 8.4 ± 0.24c | 13.14 ± 0.13b | 1.45 ± 0.05d |
Mean followed by the same letter within columns are not significantly different at the P < 0.05 level of significance using Duncan’s multiple range test. Values reported are the means ± standard error (n = 6)