| NAA + BAP (mg∙l−1) | Callus induction (%) (Mean ± SE) | Color | Texture |
| 0.0 | 0 ± 0.00 | - | - |
| 0.5 + 0.5 | 30 ± 30 | Dark-grey | Soft |
| 1.0 + 0.5 | 80 ± 20 | Dark-grey | Soft |
| 1.5 + 0.5 | 10 ± 10 | Dark-grey | Soft |
| 2.0 + 0.5 | 100 ± 0 | Dark-grey | Soft |
| 2.5 + 0.5 | 100 ± 0 | Dark-grey | Soft |
| 3.0 + 0.5 | 6.6 ± 6.6 | Dark-grey | Compact |
| 3.5 + 0.5 | 6.6 ± 6.6 | Dark-grey | Compact |
| 4.0 + 0.5 | 0 ± 0.00 | - | - |