Figure 4.

Effect of local illumination on the respiration rate of the adjacent region in the same cotton leaves. (A) photosynthetic induction under the dark–light transition in the local regions or respiration in darkness in the adjacent region; (B) stomatal conductance under the dark–light transition in the local regions or under the darkness in the adjacent region; (C) intercellular CO₂ concentration under the dark–light transition in the local regions or under the darkness in the adjacent region; (D) stomatal limitation under the dark–light transition in the local regions or in darkness in the adjacent region. C_i, intercellular CO₂ concentration; D–L transition, dark–light transition; G_s, stomatal conductance; L_s, stomatal limitation; P_n, photosynthetic rate; R_d, respiration in darkness.