Table 1. Effects of different colchicine concentrations and exposure times on polyploidy induction of R. nusutus calli.
| Colchicine concentrations (% w/v) |
Exposure times (h) | Survival rate (%) |
Polyploidy induction by ploidy level (%) | ||
|---|---|---|---|---|---|
| Diploid | Tetraploid | Mixoploid | |||
| 0 | 24 | 100.00 ± 0.00a | 100.00 ± 0.00a | 0.00 ± 0.00b | 0.00 ± 0.00b |
| 48 | 100.00 ± 0.00a | 100.00 ± 0.00a | 0.00 ± 0.00b | 0.00 ± 0.00b | |
| 0.05 | 24 | 75.00 ± 13.06ab | 100.00 ± 0.00a | 0.00 ± 0.00b | 0.00 ± 0.00b |
| 48 | 75.00 ± 13.06ab | 33.33 ± 19.25b | 66.67 ± 33.33a | 0.00 ± 0.00b | |
| 0.1 | 24 | 75.00 ± 13.06ab | 66.67 ± 33.33ab | 33.33 ± 19.25ab | 0.00 ± 0.00b |
| 48 | 58.33 ± 14.86b | 66.67 ± 33.33ab | 33.33 ± 19.25ab | 0.00 ± 0.00b | |
| 0.2 | 24 | 41.67 ± 14.86b | 33.33 ± 19.25b | 0.00 ± 0.00b | 66.67 ± 33.33a |
| 48 | 41.67 ±14.86b | 100.00 ± 0.00a | 0.00 ± 0.00b | 0.00 ± 0.00b | |
Note:
Mean ± SE values followed by different superscripts in the same column are significantly different according to ANOVA and Duncan’s Multiple Range Test (p < 0.05).