Figure 2.

Light penetration in a maize leaf. At left is the modeled maize anatomy. A square BS is surrounded by three portions of M: interveinal M (MI), adaxial M (MAD), and abaxial M (MAB). Epidermis was approximated as a flat reflecting surface. Light penetration was studied through profiles P1 and P2. At right are P1 light profiles (thick lines) and P2 light profiles (thin lines) calculated with the Kubelka-Munk (absorption + scattering) theory and calibrated with spectroscopic data (Table III). Radiation is expressed as the sum of downward + upward photon flux, as a fraction of incident photon flux (dimensionless), and plotted against the depth in the absorbing path of the leaf.