Utama (2015)
Abstract. One component of the performance of plants is their capability to
intercept light. By using a functional-structural modelling approach, an
optimization model of the 3-d above-ground structure of plants is
constructed, especially for four Indonesian rice varieties. The
constructed model consists of three main clusters: rice plant, skylight,
and optimization. Virtual experiments, using the optimization method of
"simulated annealing", deliver as a result the optimized shape of each
rice variety. Twenty-one parameters of rice plant structure are
considered in the optimization process.
Keywords: functional-structural plant model, rice, Oryza sativa, optimization, simulated annealing
Taken from Paper: Utama, D.N. 2015. The Optimization of the 3-d Structure of Plants, Using Functional-Structural Plant Models. Case Study of Rice (Oryza sativa L.) in Indonesia [Doctoral Thesis]. Fakultät für Mathematik und Informatik, Georg-August-Universität Göttingen.
A Structural Model of the Rice Plant for Optimizing the Light Interception Capability
Utama and Kurth (2015)
Abstract: One important component of the performance of a plant phenotype is its capability to capture photosynthetically active radiation (PAR). By using the approach of functional-structural plant modelling (FSPM) on the software platform GroIMP, a virtual 3-d representation of the above-ground part of a single rice plant was created. The structural model was specified in the programming language XL, which combines object-oriented and rule-based programming. Technically, the model consists of three sub-models: a structural plant model, a radiation model, and, at a meta-level, a toolbox of five different optimization methods, with simulated annealing as the most advanced technique. Our structural model of rice can simulate the vegetative phase of growth of four Indonesian rice varieties and of virtual varieties with a geometry interpolated between the existing ones. Sun movement and skylight simulation (direct and diffuse light) are based on the geographical location of Indonesia, but can easily be adapted to other places on Earth. Intercepted PAR is calculated by stochastic photon tracing. We identified 15 architectural parameters of the rice plant with influence on light interception and applied our optimization methods to them. The platform GroIMP can also be used to compare measured 3-d phenotypes with the optimized virtual shapes.
Taken from Paper: Utama, D.N., Kurth, W. 2015. A structural model of the rice plant for optimizing the light interception capability. International Plant and Algal Phenomics Meeting (IPAP), Prague, Czech
Republic.
Abstract: One important component of the performance of a plant phenotype is its capability to capture photosynthetically active radiation (PAR). By using the approach of functional-structural plant modelling (FSPM) on the software platform GroIMP, a virtual 3-d representation of the above-ground part of a single rice plant was created. The structural model was specified in the programming language XL, which combines object-oriented and rule-based programming. Technically, the model consists of three sub-models: a structural plant model, a radiation model, and, at a meta-level, a toolbox of five different optimization methods, with simulated annealing as the most advanced technique. Our structural model of rice can simulate the vegetative phase of growth of four Indonesian rice varieties and of virtual varieties with a geometry interpolated between the existing ones. Sun movement and skylight simulation (direct and diffuse light) are based on the geographical location of Indonesia, but can easily be adapted to other places on Earth. Intercepted PAR is calculated by stochastic photon tracing. We identified 15 architectural parameters of the rice plant with influence on light interception and applied our optimization methods to them. The platform GroIMP can also be used to compare measured 3-d phenotypes with the optimized virtual shapes.
Taken from Paper: Utama, D.N., Kurth, W. 2015. A structural model of the rice plant for optimizing the light interception capability. International Plant and Algal Phenomics Meeting (IPAP), Prague, Czech
Republic.
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