| Condition | % of explants without reaction | % of callogenous explants | Comments on the development of calluses |
| Light | 3.3a | 90.0b | Green white callus, compact, friable and well developed (0.7 - 1.1 cm; 0.31 g) |
| Darkness | 63.3b | 36.7a | Brown callus, compact, friable and poorly developed (0.2 - 0.3 cm; 0.12 g) |