Photosynthesis and Chlorophyll Fluorescence in Tall Fescue
Measuring the photosynthetic rate of tall fescue (Festuca arundinacea) at low temperatures is difficult because dew or frost on the leaves often prevents the use of a CO2 analyzer. Chlorophyll fluorescence measurements may make it possible to estimate photosynthetic potential when it is impossible to make photosynthetic measurements. Chlorophyll fluorescence parameters used were Fo, minimum fluorescence yield, and Fm, the maximum fluorescence yield. Fv, the variable fluorescence, is the difference between Fm and Fo. The efficiency of energy conversion in photosystem II is estimated from the ratio Fv/Fm.
KeywordsPhotosynthetic Rate Stomatal Conductance Chlorophyll Fluorescence Tall Fescue Fluorescence Ratio
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