Table I. Parameter values (means ± se) estimated from the response of assimilation to light intensity in plants grown under the four light regimes.
The light saturated rate of CO2 assimilation (Asat), quantum yield of photosynthesis (α), curvature parameter (θ), and light compensation point (Γ). Two values of dark respiration were estimated: the first from the model (Rd-model) and the second at the beginning of the diurnal period (Rd-diurnal). Letters represent the results of Tukey’s posthoc comparisons of group means.
| Treatment | Asat | Rd-model | Rd-diurnal | α | θ | Γ |
|---|---|---|---|---|---|---|
| FLH | 22.48 ± 0.2 a | 1.77 ± 0.03 b | 0.89 ± 0.22 a,b | 0.053 ± 0.0004 a | 0.78 ± 0.01 a | 33.77 ± 0.52 b |
| FLL | 18.78 ± 0.21 b | 1.59 ± 0.04 b | 0.41 ± 0.04 b | 0.054 ± 0.0007 a | 0.71 ± 0.01 a,b | 30.31 ± 0.57 b |
| SQH | 21.38 ± 0.07 a | 2.37 ± 0.05 a | 1.39 ± 0.17 a | 0.057 ± 0.0007 a | 0.78 ± 0.01 a | 42.87 ± 0.83 a |
| SQL | 17.38 ± 0.19 b | 1.95 ± 0.05 a,b | 1.03 ± 0.11 a,b | 0.062 ± 0.001 a | 0.63 ± 0.02 b | 33.02 ± 0.87 b |