Table 6. Comparison of OJIP parameters measured with direct fast imaging in comparison to P&P with 30-s delay time

The values represent the average and SE of an independent measurement on different plants. The values represent medians ± se (n = 4). Asterisks denote significant differences between the two groups according to the Mann-Whitney test (*P < 0.05, **P < 0.01, ***P < 0.001).

ParameterDirect Fast ImagingP&P 30-s Delay
Vj0.520 ± 0.0060.455 ± 0.009**
Vi0.87 ± 0.0080.89 ± 0.009
Mo1.44 ± 0.0231.085 ± 0.043**
ΦPo0.825 ± 0.0050.825 ± 0.005
ΦET2o0.39 ± 0.0060.445 ± 0.009***
ΦRE1o0.105 ± 0.0080.09 ± 0.009
ABS/RC3.350 ± 0.0292.9 ± 0.079**
TRo/RC2.750 ± 0.0152.400 ± 0.052**
ET2o/RC1.315 ± 0.0141.32 ± 0.013
RE1o/RC0.355 ± 0.0190.255 ± 0.019*
DIo/RC0.600 ± 0.0150.500 ± 0.03*