http://phyco2.us/about/ WebPSII “PhiCO2”, “PhiPS2” Quantum yield J “ETR” Electron transport rate S “Area” Leaf area in the chamber k “StmRat” Stomatal ratio . Equipment & Maintenance Equipment list Note: I’ve used OPEN versions 6.x and 5.x, both of which will work and are very similar to
DS_PhiCO2: Fugacity coefficient of CO2 in Rphree: Interface to the ...
WebDec 2, 2024 · Low phiCO2) and can limit the rate of photosynthetic carbon assimilation on transfer to low light, an effect prolonged by low temperature. What is the cost of this delayed reversal of thermal ... WebMar 1, 1998 · When leaves were exposed to low temperatures during development, the ratio of phiPSII/phiCO2 was elevated, indicating the operation of an alternative sink to CO2 for … fpt warranty
Low growth temperatures modify the efficiency of light use by ...
WebFeb 1, 1998 · Measurements of the quantum efficiencies of photosynthetic electron transport through photosystem II (phiPSII) and CO2 assimilation (phiCO2) were made … In this experiment, we are interested in two parameters: phiPS2 and phiCO2 ( ΦPSII and ΦCO2 henceforth). ΦPSII is the quantum yield of PSII calculated from fluorescence, while ΦCO2 is the quantum yield calculated from CO 2 assimilation. WebAntioxidant enzyme and phiPSII /phiCO2 data suggested that photo-oxidative stress did not explain the observed photosynthetic responses to treatment variables. Antioxidant enzyme activity in sugar maple was highest in seedlings growing on nutrient-poor soils and was inversely correlated with photosynthesis, Ca, P, and Mg concentrations. blair county pennsylvania sample ballot