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Table IV

CO2 concentration in the chloroplast (CC) and midday mesophyll conductance and stomatal conductance ratio (gmes / gs) at Ca = 350 μmol mol−1 from A/Ci curves for different treatments (control, C; winter resprouts, RW; summer resprouts, RS) and season (winter, summer). In summer, the time of day was also considered for CC values. Each value represents the mean ±SE of 10 replicates. Significant differences (p ≤ 0.05) are indicated by different letters (treatment (a, b, c), season (A, B) and time of the day (α,β,γ)).

Treatments
Season Time of the day
C RW RS
CC (μmol m−2 s−1) Winter Midday 75.3 ± 4.3aA 75.8 ± 4.0aA
Summer Morning 76.9 ± 4.0 78.5 ± 2.9 84.4 ± 5.9
Midday 66.1 ± 8.0aαA 90.7 ± 8.4aαA 96.3 ± 11.5
Evening 60.6 ± 0.8 88.2 ± 9.9 67.8 ± 3.2

gmes / gs Winter Midday 0.18 ± 0.03aB 0.17 ± 0.3aB
Summer Midday 0.03 ± 0.01aA 0.04 ± 0.01aA 0.06 ± 0.02a