| Culture solution | Hydroxyproline contents (mg/100g dry weight) | |
| 9 days after germination | 14 days after germination | |
| S1 | 47 | 39 |
| S5 | 53 | - |
| S6 | 165 | - |
| S6 | - | 284 |
| 4th-S6 | 120 | - |
| 4th-S6 | - | 202 |
| 9th-S6 | - | 98 |
| 4th-S7 | 94 | - |
| 9th-S7 | - | 100 |