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

Table 5.

Mean values of the potential (F_v/F_m) and effective (∆F/F_m’) photosystem II (PSII) quantum efficiency, the photochemical (qP) and the non-photochemical (NPQ) extinction coefficient, and the apparent electron transport rate (ETR) in G. max and B. brizantha under different water regimes (100% and 30% refill of the total amount of the evapontranspired water).

Photochemical parameters
	G. max		B. brizantha
	100%	30%	100%	30%
F_v/F_m	0.788 ^a	0.817 ^a	0.783 ^a	0.786 ^a
ΔF/F_m’	0.273 ^b	0.404 ^a	0.196 ^a	0.208 ^a
NPQ	2.07 ^a	1.70 ^b	3.15 ^a	3.10 ^a
ETR (µmol m⁻² s⁻¹)	89 ^a	86 ^a	64 ^a	44 ^b
DAE	10.7 ^b	21.8 ^a	8.8 ^a	12.4 ^a

Different letters indicate statistical difference (p < 0.05) between water regimes (100% or 30%) to each species.