Impact of Drought, Heat, and Their Combination on Chlorophyll Fluorescence and Yield of Wild Barley (Hordeum spontaneum)

Table 1

Definitions and explanation of the JIP-test parameters used in this study. See Strasser et al. [15] for further information about the theory of the JIP-test and the derivation of the parameters.

	Fluorescence parameters
	Minimum fluorescence intensity (at  µs)
	Maximum fluorescence intensity
	Relative variable fluorescence at 2 ms;
	Relative variable fluorescence at 30 ms;
	Relative amplitude of the IP-phase of the OJIP induction curve;
	Quantum efficiencies, flux ratios
	Quantum yield of the reduction;
	Probability that a trapped exciton is used for electron transport beyond ;
RC/ABS	Density of active RCs on absorption basis
	Performance Index
	Performance Index on absorption basis; = [RC/ABS]⋅[/()]⋅[/()]