Table 2.
Synergistic effect of meta-topolin (mT) (1 mg/l) with different auxins on in vitro biomass production of Plumbago zeylanica
| PGRs (auxin) | Concentration of PGRs (mg/l) | Percentage of response | Mean number of shoot/explants | Mean length of shoot (cm) |
|---|---|---|---|---|
| IAA | 0.05 | 96.11 ± 0.83d | 9.40 ± 1.34bcd | 5.88 ± 0.23b |
| 0.10 | 97.27 ± 0.49bc | 10.40 ± 1.40b | 5.94 ± 0.41b | |
| 0.25 | 97.88 ± 0.50b | 13.60 ± 1.14a | 6.85 ± 0.36a | |
| 0.50 | 95.24 ± 0.36d | 8.40 ± 1.14cde | 5.15 ± 0.18c | |
| IBA | 0.05 | 95.43 ± 0.28d | 9.20 ± 0.84bcd | 5.33 ± 0.58c |
| 0.10 | 88.55 ± 1.04f | 8.40 ± 0.55cde | 4.26 ± 0.11d | |
| 0.25 | 87.29 ± 0.53g | 7.80 ± 0.84e | 3.85 ± 0.21d | |
| 0.50 | 80.19 ± 0.94h | 6.20 ± 0.83f | 3.19 ± 0.60e | |
| NAA | 0.05 | 96.67 ± 0.50cd | 9.80 ± 1.09b | 5.92 ± 0.35b |
| 0.10 | 98.76 ± 0.34a | 12.80 ± 0.83a | 6.06 ± 0.65b | |
| 0.25 | 95.31 ± 0.29d | 9.60 ± 0.54bc | 5.88 ± 0.257b | |
| 0.50 | 91.31 ± 0.90e | 8.20 ± 0.83de | 5.17 ± 0.20c |
Each value represents the mean ± standard error of three replicates (10 samples score). Mean values followed by the same letters in each column are not significantly different (P ≤ 0.05) according to Duncan’s multiple range tests (Duncan 1955)