Table 1.
Repeated measures analysis of variance of diurnal variation of photosynthesis (A) and linear electron flux through photosystem II (ETR), for the main effects of plant type (tranformants and WT), CO2 concentration (385 ppm, 585 ppm), and time of day (time).
| 31-Jul | Photo | ETR | ||||
|---|---|---|---|---|---|---|
| df | F | P | df | F | P | |
| type | 1, 10.4 | 10.29 | 0.009 | 1, 9.11 | 9.16 | 0.014 |
| CO2 | 1, 10.4 | 28.93 | 0.0003 | 1, 9.11 | 2.04 | 0.187 |
| type*CO2 | 1, 10.4 | 1.99 | 0.188 | 1, 9.11 | 1.99 | 0.191 |
| time | 4, 73.7 | 21.83 | <.0001 | 4, 79.9 | 16.04 | <.0001 |
| type*time | 4, 73.7 | 0.41 | 0.804 | 4, 79.9 | 0.35 | 0.846 |
| CO2*time | 4, 73.7 | 5.75 | 0.000 | 4, 79.9 | 1.58 | 0.189 |
| type*CO2*time | 4, 73.7 | 0.65 | 0.627 | 4, 79.9 | 0.71 | 0.590 |
| 14-Aug | Photo | ETR | ||||
| df | F | P | df | F | P | |
| type | 1, 12.4 | 0.98 | 0.342 | 1, 10.9 | 1.54 | 0.240 |
| CO2 | 1, 12.4 | 6.58 | 0.024 | 1, 10.9 | 2.66 | 0.131 |
| type*CO2 | 1, 12.4 | 0.44 | 0.521 | 1, 10.9 | 0 | 0.971 |
| time | 4, 104 | 29.48 | <.0001 | 4, 102 | 135.52 | <.0001 |
| type*time | 4, 104 | 0.92 | 0.453 | 4, 102 | 1.16 | 0.333 |
| CO2*time | 4, 104 | 2.73 | 0.033 | 4, 102 | 1.64 | 0.169 |
| type*CO2*time | 4, 104 | 0.4 | 0.806 | 4, 102 | 0.45 | 0.775 |
Diurnal measurements were collected on July 31 and August 14, 2009.