Plant growth regulator 2,4-D (mg/L) | Day of callus formation (months) | Explant producing callus (%) | Callus proliferation (%) |
| Morphology of callus |
1 | - | 0 | 0 |
| Early stage initiation, all calluses were translucent. After 3 - 5 months, callus turned friable and yellowish. |
5 | - | 0 | 0 | ||
10 | 7 - 9 | 0.5 | 3 | ||
20 | 7 - 9 | 0.7 | 3 | ||
40 | 11 - 12 | 2.9 | 5 | ||
60 | 11 - 12 | 1.5.0 | 8 | ||
100 | 11 - 12 | 1.0 | 20 |