Table 2. Chlorophyll fluorescence parameters derived from the fast OJIP fluorescence induction.

Fluorescence parameters
F M	Maximal fluorescence from a dark-adapted leaf
F V	Maximal variable fluorescence from a dark-adapted leaf. FV=FM −F0
FV/ FM	Maximum quantum efficiency of PSII photochemistry
φEo	Quantum yield for electron transport at t = 0
φRo	Quantum yield of electron transport flux from Q to the final PSI acceptors
ψEo	Probability that a trapped exciton moves an electron into the electron transport chain beyond
δRo	Efficiency/probability with which an electron from QB is transferred until PSI acceptors
Vi	Relative variable fluorescence at phase I of the fluorescence induction curve
1-Vi	Measure of relative amplitude of the IP phase in OJIP transient, related to the size of the pools of final PSI electron acceptors
1/Vi	Relative measure of the pool size of final electron acceptors of PSI
ABS/RC	Absorption flux (for PSII antenna chls) per reaction center (RC)
TR0/RC	Trapped energy flux per RC (at t = 0)
DI0/RC	Dissipated energy flux per RC (at t = 0)
PITOTAL	Performance index total for energy conservation from photons absorbed by PSII to the reduction of PSI end acceptors
PIABS	Performance index for energy conservation from photons absorbed by PSII antenna
Sm	Normalized area above the OJIP curve