Timeline for Photoperiodism: Short-Day Plants
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 7, 2015 at 18:15 | comment | added | YviDe | The thing to remember is to not add them up. It only counts if it's in one "piece". For those flowers it's not like our sleep, where being awake for 5 minutes between two 4 hour periods still feels like a good night's sleep. For the long day plants, it's only important that no continuous dark period is longer than x hours. Does that help? | |
| Dec 7, 2015 at 15:43 | comment | added | Aleksandr Hovhannisyan | What doesn't make sense for me is this: "As long as there is never any period of darkness that exceeds the critical dark period, it will flower." Take a look at part (b) of the diagram and the very bottom scenario. The period of darkness is longer than the critical night period, but the plant is a short-night flower and thus requires a night period that is shorter--not longer--than its critical period. Even with the added flash of light, the yellow bar does not exceed the black bar. Could you please explain that part? That's mostly what confuses me. | |
| Dec 5, 2015 at 20:14 | history | answered | YviDe | CC BY-SA 3.0 |