Stomata are the primary structures that exchange water and CO2 between plants and the atmosphere.
Therefore, stomatal conductance (gs) is an important factor in the cycling and balancing of water, CO2, and
energy between plants and the atmosphere. The chlorophyll contents of leaves are often used as parameters of
Leaf physiological status. In some studies, dependence of stomatal conductance on leaf chlorophyll
concentration has been observed. (Kazuho Matsumoto et al., 2005).