The spectral quantum yield of photosynthesis (mol of CO2 per mol of absorbed photon) reached the highest value in the
640–680nm interval and a lower peak around 445 nm, for both the leaf types (Fig. 2A). In red leaves, the quantum yield at 680nm was 2.2% lower compared to the green leaves (0.0663±0.0010 vs. 0.0678±0.0003mol of CO2 per mol of absorbed photon, respectively; average±S.E. mean). In the green wavelengths (500–580 nm) spectral quantum yield was distinctly lower in red than in green leaves (Fig. 2A).