Table 2. Fundamental parameters of the O-J-I-P fluorescence induction curves recorded on attached leaves of Col-0, Ws-4 and Ler-0 accessions.

Parameter	Col-0	Ws-4	Ler-0
F v/F m	0.805±0.003	0.808±0.012	0.802±0.009
M0	1.650±0.030	1.711±0.044*	1.574±0.151
M0/VJ	3.796±0.064	3.982±0.081*	3.761±0.125

The significant differences are indicated by asterisk (Student's t test P<0.05).

The plants were grown on soil for 15–17 days at an irradiance of 120 µmol photons m⁻² s⁻¹. The leaves were adapted to darkness for 15 min before the measurement (n = 20–25).