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Table 2 Quantifying PSII performance parameters obtained from the JIP-test based on the Chl a fluorescence transients

From: Identification of manganese efficiency candidate genes in winter barley (Hordeum vulgare) using genome wide association mapping

Extracted and technical fluorescence parameters

F0

=

F50μs, fluorescence intensity at 50 μs

FK

=

F400μs fluorescence intensity at the K step (at 400 μs)

FJ

=

F2ms, fluorescence intensity at the J step (at 2 ms)

FI

=

F30ms, fluorescence intensity at the I step (at 30 ms)

FM

=

Maximum fluorescence intensity

FV

=

(FM – F0), variable fluorescence from a dark adapted leaf

FV/FM

=

Maximum quantum efficiency of PSII photochemistry.

tFM

=

Time to reach FM, in ms

VK

=

(FK – F0) / (FM – F0), relative variable fluorescence at 400 μs

VJ

=

(FJ – F0) / (FM – F0), relative variable fluorescence at 2 ms

VI

=

(FI – F0) / (FM – F0), relative variable fluorescence at 30 ms

Area

=

Area under the curve between F0 and FM