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A Dynamic, Architectural Plant Model Simulating Resource-dependent Growth
- Source :
- Annals of Botany, Annals of Botany, Oxford University Press (OUP), 2004, Annals of Botany, 93, pp.591-602, Annals of Botany, 2004, Annals of Botany, 93, pp.591-602
- Publication Year :
- 2004
- Publisher :
- Oxford University Press (OUP), 2004.
-
Abstract
- Accès sur le site éditeur : http://aob.oxfordjournals.org/cgi/content/abstract/93/5/591; Background and Aims Physiological and architectural plant models have originally been developed for different purposes and therefore have little in common, thus making combined applications dif®cult. There is, however, an increasing demand for crop models that simulate the genetic and resource-dependent variability of plant geometry and architecture, because man is increasingly able to transform plant production systems through combined genetic and environmental engineering. d Model GREENLAB is presented, a mathematical plant model that simulates interactions between plant structure and function. Dual-scale automaton is used to simulate plant organogenesis from germination to maturity on the basis of organogenetic growth cycles that have constant thermal time. Plant fresh biomass production is computed from transpiration, assuming transpiration ef®ciency to be constant and atmospheric demand to be the driving force, under non-limiting water supply. The fresh biomass is then distributed among expanding organs according to their relative demand. Demand for organ growth is estimated from allometric relationships (e.g. leaf surface to weight ratios) and kinetics of potential growth rate for each organ type. These are obtained through parameter optimization against empirical, morphological data sets by running the model in inverted mode. Potential growth rates are then used as estimates of relative sink strength in the model. These and other `hidden' plant parameters are calibrated using the non-linear, least-square method. d Key Results and Conclusions The model reproduced accurately the dynamics of plant growth, architecture and geometry of various annual and woody plants, enabling 3D visualization. It was also able to simulate the variability of leaf size on the plant and compensatory growth following pruning, as a result of internal competition for resources. The potential of the model's underlying concepts to predict the plant's phenotypic plasticity is discussed.
- Subjects :
- 0106 biological sciences
Organogénèse
Phénotype
F62 - Physiologie végétale - Croissance et développement
Application des ordinateurs
Plant Science
F50 - Anatomie et morphologie des plantes
phenotypic plasticity
01 natural sciences
competition among sinks
Resource (project management)
Plant production
Biomasse
Biomass
2. Zero hunger
Port de la plante
demand functions
U10 - Informatique, mathématiques et statistiques
Ecology
Plant architecture
04 agricultural and veterinary sciences
structural-functional models
source–sink relationships
Plant development
Imagerie
Anatomie végétale
Helianthus
Algorithms
Modèle mathématique
Développement biologique
Plant Development
Biology
Arbre
Models, Biological
Computer Simulation
Architecture
Croissance
Plant Transpiration
Modèle de simulation
Plant models
Original Articles
15. Life on land
[INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation
Modélisation
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
ComputingMethodologies_GENERAL
Biochemical engineering
Plant Structures
010606 plant biology & botany
Subjects
Details
- ISSN :
- 10958290 and 03057364
- Volume :
- 93
- Database :
- OpenAIRE
- Journal :
- Annals of Botany
- Accession number :
- edsair.doi.dedup.....177ec0e2d24879b9e6949eaab8c4a1a5