FIGURE 2.

Steady state net leaf photosynthetic (P_n) light response curves in ‘Pink Champion’ and ‘Royal Champion’ in the control and diffuse light treatments. The measurements were taken in March 2013 (winter growing season). During the measurements, air temperature, CO₂ concentration, VPD in the measurement chamber were maintained at 25°C, 800 μmol mol^-1, and between 0.5–1 kPa, respectively. Lines represent the fit of the non-rectangular hyperbola function (Eq. 2). Error bars show ± SE (n = 6).