Is it possible to measure clorophyll fluorescence in the night? Just to avoid the wasteful process of shading each leaf with a little piece of black cardboard during 30 minutes. Thank you.
in the night there should be real darkness but handling instrumentation requires some light. the fluencce for activating LHC is very low. The use of leaf shutter clips and recording F0 relaxation with dark adaptation lenght are useful info. http://pcp.oxfordjournals.org/content/50/9/1600.full.pdf
You can use a light tool and standardize with the real sunlight using light meter for error correction. Alternatively, you can also use SPAD or another tool likely.
Soon after irradiation, in the dark you can measure CHL fluorescence
yes Chlorophyll excitation within wide range red:FR , imersion drop
Yes, you can. It may be better to measure it in the night than in the day time for some treatments.
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