Simulating daily field crop canopy photosynthesis: an integrated software package

Wu, Alex, Doherty, Al, Farquhar, Graham D. and Haammer, Graeme L. (2017) Simulating daily field crop canopy photosynthesis: an integrated software package. Functional Plant Biology, 45 3: 362-377. doi:10.1071/FP17225

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Author Wu, Alex
Doherty, Al
Farquhar, Graham D.
Haammer, Graeme L.
Title Simulating daily field crop canopy photosynthesis: an integrated software package
Journal name Functional Plant Biology   Check publisher's open access policy
ISSN 1445-4408
Publication date 2017-11-13
Year available 2017
Sub-type Article (original research)
DOI 10.1071/FP17225
Open Access Status Not yet assessed
Volume 45
Issue 3
Start page 362
End page 377
Total pages 16
Place of publication Clayton, VIC Australia
Publisher CSIRO Publishing
Language eng
Abstract Photosynthetic manipulation is seen as a promising avenue for advancing field crop productivity. However, progress is constrained by the lack of connection between leaf-level photosynthetic manipulation and crop performance. Here we report on the development of a model of diurnal canopy photosynthesis for well watered conditions by using biochemical models of C-3 and C-4 photosynthesis upscaled to the canopy level using the simple and robust sun-shade leaves representation of the canopy. The canopy model was integrated over the time course of the day for diurnal canopy photosynthesis simulation. Rationality analysis of the model showed that it simulated the expected responses in diurnal canopy photosynthesis and daily biomass accumulation to key environmental factors (i.e. radiation, temperature and CO2), canopy attributes (e.g. leaf area index and leaf angle) and canopy nitrogen status (i.e. specific leaf nitrogen and its profile through the canopy). This Diurnal Canopy Photosynthesis Simulator (DCaPS) was developed into a web-based application to enhance usability of the model. Applications of the DCaPS package for assessing likely canopy-level consequences of changes in photosynthetic properties and its implications for connecting photosynthesis with crop growth and development modelling are discussed.
Keyword CO2 partial pressure
Dry matter accumulation
Temperature effects
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Queensland Alliance for Agriculture and Food Innovation
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Created: Thu, 11 Jan 2018, 14:21:44 EST by Alex Wu on behalf of Centre for Crop Science