Table 5. Comparison of OJIP parameters measured with direct fast imaging in comparison to P&P with 20-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 20-s Delay
Vj0.520 ± 0.0060.48 ± 0.003**
Vi0.87 ± 0.0080.92 ± 0.005*
Mo1.44 ± 0.0231.145 ± 0.006***
ΦPo0.825 ± 0.0050.825 ± 0.005
ΦET2o0.39 ± 0.0060.43 ± 0.003**
ΦRE1o0.105 ± 0.0080.07 ± 0.003*
ABS/RC3.35 ± 0.0292.93 ± 0.021***
TRo/RC2.75 ± 0.0152.41 ± 0.011***
ET2o/RC1.315 ± 0.0141.26 ± 0.013*
RE1o/RC0.355 ± 0.0190.20 ± 0.01**
DIo/RC0.600 ± 0.0150.515 ± 0.013**