TABLE 3.
Mean CO2 compensation points calculated from the A/Ci curves for the four genotypes grown at three different CO2 concentrations. Each compensation point was calculated from linear regressions from each A/Ci curve as the value for Ci when A = zero. Values are means from the regression for the 16th leaf from four different plants for each genotype ± one standard deviation. A two-factor ANOVA (genotype x growth CO2 concentration) was highly significant (p < 0.01) for growth CO2 concentration but insignificant for genotype.
| Growth CO2 | Genotype | |||
|---|---|---|---|---|
| WT | αca2 | βca4 | αca2βca4 | |
| 200 μL L–1 | 75.9 ± 13.1 | 81.1 ± 15.5 | 80.7 ± 7.9 | 98.9 ± 14.2 |
| 400 μL L–1 | 67.1 ± 1.1 | 73.5 ± 5.8 | 66.4 ± 5.3 | 63.9 ± 7.0 |
| 1,000 μL L–1 | 65.8 ± 5.9 | 71.5 ± 8.7 | 65.4 ± 7.0 | 60.9 ± 7.1 |