Table 1.
Midday water potential (MPa) in leaves of S. capitata exposed to elevated levels of atmospheric [CO2] and temperature at the Trop-T-FACE facility.
| DOE | aCO2aT | eCO2aT | aCO2eT | eCO2eT | ANOVA p-value |
|---|---|---|---|---|---|
| 14 | –0.11 ± 0.01 | -0.2 ± 0.05 | -0.13 ± 0.02 | -0.15 ± 0.04 | CO2 = 0.15, T = 0.63, CO2 × T = 0.39 |
| 21 | -0.1 ± 0.02 | -0.1 ± 0.01 | -0.07 ± 0.02 | -0.09 ± 0.01 | CO2 = 0.57, T = 0.35, CO2 × T = 0.73 |
| 34 | -0.18 ± 0.02 | -0.21 ± 0.02 | -0.24 ± 0.05 | -0.22 ± 0.03 | CO2 = 0.81, T = 0.25, CO2 × T = 0.37 |
| 38 | -0.14 ± 0.02 | -0.11 ± 0.03 | -0.13 ± 0.01 | -0.12 ± 0.03 | CO2 = 0.58, T = 0.94, CO2 × T = 0.67 |
| 55 | -0.42 ± 0.20 | -0.37 ± 0.06 | -0.59 ± 0.10 | -0.47 ± 0.10 | CO2 = 0.33, T = 0.12, CO2 × T = 0.65 |
Mean values (n = 4) and standard error (±) are show for every sampling day. [CO2] levels: ambient (aCO2) and elevated (eCO2, 600 μmol mol-1). Temperature levels: ambient (aT) and elevated (eT, +2°C above ambient canopy temperature). ANOVA p-value is shown for main effects (CO2 or T) or interactions CO2 × T. DOE: day of experiment.