CHAPTER 12 MEASUREMENTS WITH THE MINI-PAM
called Genty-parameter. In the following sections some background
information on this and other fluorescence parameters is given, and
special aspects on fluorescence measurements with the MINI-PAM
are outlined, in order to make optimal use of this instrument.
12.1 Chlorophyl fluorescence as an indicator of photosynthesis
Photosynthesis involves reactions at five different functional
levels:
• processes at the pigment level
• primary light reactions
• thylakoid electron transport reactions
• dark-enzymic stroma reactions
• slow regulatory feedback processes
In principle, chlorophyll fluorescence can function as an
indicator at all of these levels of the photosynthesis process.
Chlorophyll is the major antenna pigment, funneling the absorbed
light energy into the reactions centers, where photochemical
conversion of the excitation energy takes place.
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