| 6th day | 12th day | 18th day | 24th day | 6th day | 12th day | 18th day | 24th day |
Optical density | IAA concentration (µg/ml) | |||||||
Blank | 0.092 | 0.192 | 0.192 | 0.162 | 1.2 | 2.5 | 2.5 | 2 |
W14 (b) | 0.134 | 0.236 | 0.678 | 0.477 | 1.6 | 3.2 | 10.1 | 7.2 |
W14 (bc) | 0.141 | 0.228 | 0.190 | 0.204 | 1.7 | 3 | 2.4 | 2.7 |
W12 | 0.130 | 0.256 | 0.296 | 0.586 | 1.6 | 3.4 | 4.3 | 9 |
S5 | 0.102 | 0.280 | 0.210 | 0.178 | 1.3 | 4 | 2.8 | 2.5 |
S18 | 0.102 | 0.218 | 0.161 | 0.216 | 1.3 | 2.9 | 2.2 | 2.9 |