| Comparative index | pH value | ||||||
| 4.0 | 4.5 | 5.0 | 5.5 | 6.0 | 6.5 | 7.0 | |
| germination potential/% | 85 ± 0.556 | 88 ± 0.618 | 92 ± 0.453 | 95 ± 0.703 | 98 ± 0.577 | 95 ± 0.859 | 95 ± 0.710 |
| germination rate/% | 90 ± 0.943 | 93 ± 1.026 | 97 ± 0.837 | 98 ± 0.939 | 99 ± 0.908 | 98 ± 0.790 | 97 ± 0.516 |