. 1999 Mar;119(3):1101–1106. doi: 10.1104/pp.119.3.1101

Table I.

Quantum yield of PSII in dark-adapted leaves, F_v/F_m, qP, and Φ_exc of controls, salt-stressed, rewatered, and rewatered-plus-bag (C, SS, R, RB, respectively) spinach leaves at the 22-, 43-, and 50-d samplings

Leaf Type	Days
	F_v/F_m			qP			Φ_exc
	22	43	50	22	43	50	22	43	50
C	0.79_a	0.76_a	0.77_a	0.63_a	0.53_a	0.50_a	0.56_a	0.45_a	0.53_a
SS	0.77_a	0.73_ab	0.70_b	0.54_b	0.17_d	0.17_b	0.41_b	0.29_bc	0.29_bc
R	0.77_a	0.72_ab	0.76_a	0.55_b	0.46_ab	0.47_a	0.38_b	0.45_a	0.50_a
RB	0.77_a	0.72_ab	0.70_b	0.50_b	0.33_c	0.20_b	0.43_b	0.36_b	0.36_b

The photochemical parameters were measured on the same five leaves from different plants for each treatment. Means and mean separation between columns (Tukey’s test, 5% level of confidence) are reported. Leaves were exposed to ambient CO₂ and O₂ concentration and to 1200 μmol photons m⁻² s⁻¹.