
Keywords: A; leaf CO2 assimilation; Ac; A when Ca = 38 Pa; Amax; A when Ca = 38 Pa and Q = 2300 μmol mâ2 sâ1; Apot; A when Ci = 38 Pa and Q = 2300 μmol mâ2 sâ1, also defined as photosynthetic capacity; AUL; A of upper layer when Ci =Â