Table 1.
Variables in the proposed models.
| Variable | Cont-SDSSM | Disc-SDSSM | 2L-SDSSM |
|---|---|---|---|
| x t | Sugar content | Sugar content | Sugar content |
| y t | Stem diameter | Stem diameter | Stem diameter |
| u t | Temperature, solar radiation, VPD, elapsed date1, accumulated temperature2 | Elapsed date1, accumulated temperature2 | Temperature, solar radiation, VPD |
| v t | — | — | Elapsed date1, accumulated temperature2 |
| s t | CO2 concentration, solar radiation, step ID | CO2 concentration, solar radiation, step ID | CO2 concentration, solar radiation, step ID |
1Number of days after flowering. 2Summation of daily temperatures from the flowering date to the present.