Figure 6.

Photosynthetic light response curves from leaves grown under either 12 h lighting (200 µmol m⁻² s⁻¹ red + 50 µmol m⁻² s⁻¹ blue, 06:00–18:00) and CL (200 µmol m⁻² s⁻¹ red, 06:00–18:00 + 50 µmol m⁻² s⁻¹ blue, 18:00–06:00) at 18 DIT (panel A) and 43 DIT (panel B) as determined using a Li-COR 6400 with a red/blue standard Li-COR light source. Measurements were made at a CO₂ concentration of 800 µl L⁻¹, leaf temperature of 24°C, and a relative humidity of 55–65%. Regression lines were fit to y = y_o + a(1 − e^(−b*x)) for each light treatment. Insert A’ and B’ are magnifications of 0–100 µmol m⁻² s⁻¹ PAR regions fit to the regression line y = mx + b.