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Photosynthetica 2018, 56(2):633-640 | DOI: 10.1007/s11099-017-0701-8

Simulation of PSII-operating efficiency from chlorophyll fluorescence in response to light and temperature in chrysanthemum (Dendranthema grandiflora) using a multilayer leaf model

E. Janka1,*, O. Körner2, E. Rosenqvist3, C. O. Ottosen4
1 Department of Process, Energy and Environmental Technology, University College of Southeast Norway, Porsgrunn, Norway
2 Department of Plant Technology, AgroTech, Danish Technological Institute, Taastrup, Denmark
3 Department of Plant and Environmental Sciences, Crop Science, University of Copenhagen, Taastrup, Denmark
4 Department of Food Science - Plant, Food and Climate, Aarhus University, Årslev, Denmark

Chlorophyll fluorescence serves as a proxy photosynthesis measure under different climatic conditions. The objective of the study was to predict PSII quantum yield using greenhouse microclimate data to monitor plant conditions under various climates. Multilayer leaf model was applied to model fluorescence emission from actinic light-adapted (F') leaves, maximum fluorescence from light-adapted (Fm') leaves, PSII-operating efficiency (Fq'/Fm'), and electron transport rate (ETR). A linear function was used to approximate F' from several measurements under constant and variable light conditions. Model performance was evaluated by comparing the differences between the root mean square error (RMSE) and mean square error (MSE) of observed and predicted values. The model exhibited predictive success for Fq'/Fm' and ETR under different temperature and light conditions with lower RMSE and MSE. However, prediction of F' and Fm' was poor due to a weak relationship under constant (R2 = 0.48) and variable (R2 = 0.35) light.

Additional key words: extreme climate; greenhouse; monitor; paradermal layer; photosynthesis

Received: September 23, 2016; Accepted: December 2, 2016; Published: June 1, 2018  Show citation

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Janka, E., Körner, O., Rosenqvist, E., & Ottosen, C.O. (2018). Simulation of PSII-operating efficiency from chlorophyll fluorescence in response to light and temperature in chrysanthemum (Dendranthema grandiflora) using a multilayer leaf model. Photosynthetica, 56(2), 633-640. doi: 10.1007/s11099-017-0701-8
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