. 2019 Aug 29;20(17):4227. doi: 10.3390/ijms20174227

Table 1.

Photosynthetic and chlorophyll fluorescence parameters.

Formulae and Terms		U. pumila L.	U. pumila ’Jinye’
Net photosynthetic rate	Pn	17.41 ± 1.42 ^a	12.57 ± 2.80 ^b
Fluorescence intensity	Fo	5695.32 ± 468.22 ^a	2657.62 ± 248.74 ^b
	Fm	21,337.45 ± 715.39 ^a	5686.73 ± 482.54 ^b
	Fv	15,642.73 ± 657.22 ^a	3029.86 ± 397.61 ^b
Yields or flux ratios	φPo	0.73 ± 0.13 ^a	0.53 ± 0.08 ^b
	ψO	0.84 ± 0.11 ^a	0.73 ± 0.11 ^b
	φEo	0.62 ± 0.07 ^a	0.39 ± 0.04 ^b
	φDo	0.27 ± 0.04 ^b	0.47 ± 0.05 ^a
Phenomenological energy fluxes	ABS/CS_O	5695.73 ± 451.35 ^a	2657.06 ± 426.33 ^b
	TR_O/CS_O	4174.96 ± 391.57 ^a	1415.42 ± 206.54 ^b
	ET_O/CS_O	3523.71 ± 299.36 ^a	1039.25 ± 255.32 ^b
	DI_O/CS_O	1520.04 ± 268.13 ^a	1241.58 ± 143.68 ^b
Density of reaction centers	RC/CS_O	2823.42 ± 162.47 ^a	890.16 ± 118.67 ^b

The results were expressed as average ± SD. Pn: Net photosynthetic rate; Fo: Minimal recorded fluorescence intensity; Fm: Maximal recorded fluorescence intensity; φPo: Maximum quantum yield for primary photochemistry (at t = 0); ψo: Probability that a trapped exciton moves an electron into the electron transport chain beyond QA (at t = 0); φEo: Quantum yield for electron transport (at t = 0); φDo: Quantum ratio for heat dissipation; ABS/CSo: Absorption flux per CS (at t = 0); TRo/CSo: Trapped energy flux per CS (at t = 0); ETo/CSo: Electron transport flux per CS (at t = 0); DIo/CSo: Dissipated energy flux per CS (at t = 0); RC/CSo: Density of RCs (QA-reducing PS II reaction centers). Different letter representations significant difference between different elms (p < 0.05).