Rooting and production of plantlets from explants of Platanus × acerifolia
| Concentration of growth regulators (mg/l) | No. of explants | |||
|---|---|---|---|---|
| BAP | NAA | Surviving initial1 growth period | Surviving six weeks later | |
| rooted | plantlets | |||
| Continuous light (1300 to 1500 lux) | ||||
| 0.1 | 0.1 | 12 | 1 | 0 |
| 0.01 | 0.1 | 12 | 1 | 1 |
| 0.1 | 0.01 | 9 | 2 | 0 |
| 0.01 | 0.01 | 7 | 0 | 0 |
| Dark | ||||
| 0.1 | 0.1 | 10 | 6 | 1 |
| 0.01 | 0.1 | 11 | 4 | 2 |
| 0.1 | 0.01 | 8 | 5 | 3 |
| 0.01 | 0.01 | 7 | 3 | 2 |
↵1 Initially, 40 explants were started on each of the four different BAPoNAA combinations and held for 7 weeks under continuous light after which ca. 50% of the survivors were exposed to continuous light and the other half to dark conditions.