Table 4. Comparison of OJIP parameters measured with direct fast imaging in comparison to P&P with 10-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).

Parameter	Direct Fast Imaging	P&P 10-s Delay
Vj	0.520 ± 0.006	0.47 ± 0.007**
Vi	0.87 ± 0.008	0.94 ± 0.005**
Mo	1.44 ± 0.023	1.20 ± 0.027***
ΦPo	0.825 ± 0.005	0.82 ± 0.003
ΦET2o	0.39 ± 0.006	0.44 ± 0.006**
ΦRE1o	0.105 ± 0.008	0.05 ± 0.006**
ABS/RC	3.35 ± 0029	3.14 ± 0.033**
TRo/RC	2.75 ± 0.015	2.575 ± 0.023**
ET2o/RC	1.315 ± 0.014	1.385 ± 0.005*
RE1o/RC	0.355 ± 0.019	0.16 ± 0.011***
DIo/RC	0.600 ± 0.015	0.565 ± 0.010