Analysis of the density effects on the source-sink dynamics in Sugar-Beet growth - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Communication Dans Un Congrès Année : 2009

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

Résumé

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
Fichier principal
Vignette du fichier
PMA09_Lemaire_etal.pdf (313.06 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

inria-00543137 , version 1 (05-12-2010)

Identifiants

  • HAL Id : inria-00543137 , version 1
  • PRODINRA : 167840

Citer

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. Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications (PMA09), Nov 2009, Beijing, China. 454 p. ⟨inria-00543137⟩
431 Consultations
333 Téléchargements

Partager

Gmail Facebook X LinkedIn More