Analysis of the density effects on the source-sink dynamics in Sugar-Beet growth

Sébastien Lemaire 1, * Fabienne Maupas 1 Paul-Henry Cournède 2, 3 Jean-Michel Allirand 4 Bertrand Ney 4 P. De Reffye 5
* Auteur correspondant
3 DIGIPLANTE - Modélisation de la croissance et de l'architecture des plantes
MAS - Mathématiques Appliquées aux Systèmes - EA 4037, Inria Saclay - Ile de France, Ecole Centrale Paris, Centre de coopération internationale en recherche agronomique pour le développement [CIRAD] : UMR
Abstract : Background and Aims: This paper aims at studying the capacity of an individual-based morphogenetic crop model of sugar beet growth - GreenLab - to predict the effects of population density on growth and yield. Methods: A field experiment was carried out for three homogeneous population densities to measure detailed plant development and growth of one cultivar. A set of in situ measurements were used to observe some model inputs (organs' expansion times and life-spans) and destructive data of dry masses were collected for model calibration. Keys Results and Conclusions: For all density conditions, the plasticity of total biomass production and allocation patterns was accurately simulated using the sets of optimized parameters. Most of them reveal stable across different spacing, and a few parameters vary with density: specific blade mass, time of phyllochron increase, petiole sink and the characteristic surface used to compute Beer's law at individual level. These results are a first step towards developing a predictive capacity regarding crop spacing
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Communication dans un congrès
Li, B.-G. and Jaeger, M. and Guo, Y. Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications (PMA09), Nov 2009, Beijing, China. IEEE Computer Society (Los Alamitos, California), 2009, Plant Growth Modeling, Simulation, Visualization and Applications
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  • HAL Id : inria-00543137, version 1

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Sébastien Lemaire, Fabienne Maupas, Paul-Henry Cournède, Jean-Michel Allirand, Bertrand Ney, et al.. Analysis of the density effects on the source-sink dynamics in Sugar-Beet growth. Li, B.-G. and Jaeger, M. and Guo, Y. Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications (PMA09), Nov 2009, Beijing, China. IEEE Computer Society (Los Alamitos, California), 2009, Plant Growth Modeling, Simulation, Visualization and Applications. 〈inria-00543137〉

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