. 2013 Jul 10;2(3):473–488. doi: 10.3390/plants2030473

Table 4.

Mean values of photosynthetic capacity (A_maxL), dark respiration (R_d), photorespiration (Pr), photosynthetic potential (A_maxCO2), relative stomatal limitation to photosynthesis (L_S), and maximum ratio of Rubisco carboxylation (V_cmax) in G. max and B. brizantha under different water regimes (100% and 30% refill of the total amount of the evapontranspired water).

Gas exchange parameters
	G. max		B. brizantha
	100%	30%	100%	30%
A_maxL (µmol CO₂ m⁻² s⁻¹)	17.3 ^a	10.98 ^b	14.07 ^a	6.86 ^b
R_d (µmol CO₂ m⁻² s⁻¹ )	2.28 ^a	2.07 ^a	1.23 ^a	0.86 ^a
Pr (µmol CO₂ m⁻² s⁻¹)	5.25 ^a	3.40 ^b	0.07 ^a	0.08 ^a
A_maxCO2 (µmol CO₂ m⁻² s⁻¹)	18.68 ^a	6.80 ^b	21.78 ^a	10.46 ^b
L_S	27.9^a	28.7 ^a	9.6 ^b	18.8 ^a
V_cmax (µmol m⁻² s⁻¹)	84 ^a	61 ^b	21 ^a	10 ^b

Different letters indicate statistical difference (p < 0.05) between water regimes to each species.