Fig. 3
Effects of leaf removal on gas exchange parameters and chlorophyll concentration at three and seven days after defoliation. a, b, c and d represent net photosynthetic rate (Pn), stomatal conductance (gs), intercellular CO2 concentration (Ci) and chlorophyll concentration, respectively. S0 refers to control (no leaf removal); S2 refers to the removal of two leaves and S4 refers to the removal of four leaves from top of the plant. Data represent means ± SE (n = 3). Different small letters in each group indicate significant differences at P ≤ 0.05