Table 1.
Effects of APM on survival rate and chromosome doubling of raphanobrassica plantlets
| APM concentration (mg l−1) | Survival rate (%) | Ploidy level | A + B + C + D (%) | |||
|---|---|---|---|---|---|---|
|
| ||||||
| A: Tetraploid (%) | B: Hexaploid (%) | C: Octaploid (%) | D: Mixoploid (%) | |||
| 0 | 56.0 ± 5.7 a | 0.0 | 0.0 c | 0.0 b | 0.0 | 0.0 c |
| 3 | 18.7 ± 1.9 b | 0.0 | 4.0 ± 0.0 a | 2.7 ± 0.5 a | 0.0 | 6.7 ± 1.9 a |
| 6 | 1.3 ± 1.9 c | 0.0 | 1.3 ± 0.5 b | 0.0 b | 0.0 | 1.3 ± 1.9 b |
| 9 | 0.0 d | 0.0 | 0.0 c | 0.0 b | 0.0 | 0.0 c |
Number of treated plantlets was 10 for each treatment and the experiment was repeated three times. Survival rate was evaluated two months after the treatment. Rate of each ploidy plantlets was calculated as (total number of corresponding ploidy plant-lets / total number of treated plantlets) × 100 four months after the treatment. Different letters indicated significant differences at p < 0.05, as determined by Tukey’s HSD test after arc-sine transformation of the data.