The dependencies of 6 chlorophyll fluorescence parameters (φe, the photochemical
efficiency of PSII; φII, quantum yield of the PSII electron transport; φP, potential yield of the …

Prompt chlorophyll a fluorescence kinetics at room temperature were measured from intact
spruce needles. The fluorescence signal was recorded after varying light pretreatments …

Winter stress induces loss of photosynthetic capacity in at least two ways: 1.) At freezing
temperatures below-4° C the photosynthetic membranes were disintegrated. 2.) Chilling …

The contribution of PSII towards increasing the yield of chlorophyll fluorescence at a
temperature> 70° C was studied in isolated chloroplasts of peas and Pinus sibirica. The …

In vivo chlorophyll fluorescence kinetics was observed in naturally regenerated and planted
Scots pine (Pinus sylvestris L.) seedlings growing at two adjacent sites in northern Sweden …

Abstract On 3 Norway spruce (Picea abies) trees at (a) 700 m alt.,(b) 1000 m alt. and (c)
1520 m alt., measurements were made between Jan. and Aug. 1988 of the photochemical …

Chlorophyll fluorescence was measured using a non-destructive chlorophyll fluorescence
method combined with parallel sampling of light and temperature data from a meteorological …

Diurnal changes in chlorophyll fluorescence (CF) were followed in the growth chamber and
outdoor-grown healthy seedlings of jack pine, black spruce and eastern white pine. Fv …

Photoinhibition, expressed as the decay of the Fv/Fm ratio during sunny days, has been
found in situ in a canopy of Norway spruce (Picea abies (L.) Karst). For the investigation of …

The impact of environmental light on the function of the photosystems was measured for a
healthy anda declining spruce (Picea abies (L.) Karst) growing at an altitude of 840 m near …