Table 1.
Parameters used for modelling C4 photosynthesis based on the CO2-response curves for photosynthesis (von Caemmerer, 2000)
| Parameter | Value | Description |
| Kc | 0.973 mbar | Michaelis–Menten constant of Rubisco for CO2 (variable with temperature, corrected to 20 °C) |
| Ko | 575 mbar | Michaelis–Menten constant of Rubisco for O2 (variable with temperature, corrected to 20 °C) |
| Kp | 101 μmol mol−1 | Michaelis–Menten constant of PEPC for CO2 (variable with temperature, corrected to 20 °C) |
| O | 21% | O2 partial pressure in the bundle sheath and mesophyll cells |
| gbs | 3 mmol m−2 s−1 | Bundle-sheath conductance to CO2 |
| gi | 2 mol m−2 s−1 | Mesophyll conductance to CO2 |
| Rd | 0.01*Vcmax | Mitochondrial respiration |
| Rm | 0.5*Rd | Mesophyll mitochondrial respiration |
| γ* | 0.000193 | Half the reciprocal of Rubisco speficity |
| X | 0.4 | Partitioning factor of electron transport rate |
| θ | 0.7 | Empirical curvature factor |
| F | 0.15 | Factor that corrects for spectral quality of light |
| abs | 0.85 | Absorptance of leaves |
| I | 1000 μmol m−2 s−1 | Irradiance used |
| Ia | 361.2 μmol m−2 s−1 | Total absorbed irradiance |