Fig. 7.

Response of photosynthesis to palisade mesophyll length to width ratio (L:W ratio). The top row shows photosynthesis at a CO₂ concentration ([CO₂]) of 400 µmol mol⁻¹ and a stomatal conductance of 0.15 mol m⁻² s⁻¹, while bottom rows are at [CO₂] of 80 µmol mol⁻¹ and stomatal conductance of 0.17 mol m⁻² s⁻¹. Irradiance was 1500 µmol m⁻² s⁻¹. The extents of airspace formation in palisade mesophyll were low, medium, and high. The anisotropies (β) during growth were 0.10 (open circles), 0.50 (filled triangles), and 1.00 (open triangles). Errors bars show the SD (n=3).