CHAPTER 12 MEASUREMENTS WITH THE MINI-PAM
Fig. 13: Relationship between qN and NPQ
12.3.7 YIELD-measurements of illuminated samples
With every application of START a YIELD-measurement is
carried out and on the LC-display of the MINI-PAM in the standard
menu position 1 the following signals measured in connection with a
particular saturation pulse are shown:
• F, fluorescence yield measured briefly before triggering of the
saturation pulse;
• M, fluorescence yield reached during the saturation pulse;
• Y, effective yield of photochemical energy conversion calculated
as YIELD = (M-F)/M;
• E, apparent electron transport rate (ETR) calculated as ETR =
YIELD * PAR * 0.5 * ETR-factor (displayed when Leaf-Clip
Holder 2030-B is connected)
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