Table II. Chl (chl a + b) contents, chl a/b ratio, and F_v/F_m.

Data are mean ± sd (n = 5). Plants were grown at 300 μmol photons m⁻² s⁻¹ in a photoperiod (14 h of light, 10 h of dark) for 3 weeks.

Plant	Chl a + b	Chl a/b	Fv/Fm
	mg/g fresh wt
Control	4.16 ± 0.78	3.03 ± 0.13	0.816 ± 0.005
NK2-1	3.74 ± 0.39	3.04 ± 0.27	0.811 ± 0.005
NK2-2	4.81 ± 0.47	3.03 ± 0.04	0.808 ± 0.007
NK2-15	3.98 ± 0.36	2.76 ± 0.24	0.810 ± 0.024