Table 3.
The meanings of the parameters in present study
| Parameter | Description |
|---|---|
| Tb | the base temperature |
| To | the optimal temperature |
| Tc | the ceiling temperature |
| tg | the time to a given specific germination percentage g |
| θT(50) | the thermal time for 50% of seeds to germinate |
| Tc(50) | the ceiling temperature for 50% of seeds to germinate |
| θT | the thermal time constant |
| σθT | the standard deviation of log θT requirements |
| σTc | the standard deviation of Tc |
| θH | the hydrotime constant |
| ψb(50) | the median base water potential |
| σψb | the standard deviation of ψb(50) |
| θHT | the hydrothermal time constant |