Numerical sunflower plants responding to light and temperature
A 3-dimensional model of sunflower plant is built, which allows simulating the plant-environment relationships and will eventually be a powerful tool for modeling genotype x environment interactions and consequences of planting density. It was built by using mechanisms based on experimental relationships which apply to a wide range of experimental situations. The software simulates spatial and temporal changes in plant architecture. This enables one to analyze the feed-back consequences of temporary light or water deficits on the plant leaf area. For example, a temporary light deficit results in a reduction of leaf expansion rate. This in turn reduces further interception of light by the whole plant and affects, through a feed-back process, the growth rate of newly initiated leaves which were not affected themselves by the light deficit. Our objective is now to simulate the growth of the 3D plant model in permanent interaction with its meteorological environment through bi-directional integration between the "growth-engine" of the simulation of plant architecture and ecophysiological models. This will be done through conception and development of an integrated software.
| Auteurs principaux: | , , , , |
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| Format: | conference_item biblioteca |
| Langue: | eng |
| Publié: |
International Sunflower Association
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| Sujets: | U10 - Informatique, mathématiques et statistiques, F62 - Physiologie végétale - Croissance et développement, F50 - Anatomie et morphologie des plantes, Helianthus annuus, port de la plante, modèle de simulation, facteur du milieu, réponse de la plante, croissance, bilan radiatif, http://aims.fao.org/aos/agrovoc/c_3539, http://aims.fao.org/aos/agrovoc/c_5969, http://aims.fao.org/aos/agrovoc/c_24242, http://aims.fao.org/aos/agrovoc/c_2594, http://aims.fao.org/aos/agrovoc/c_25446, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_6420, |
| Accès en ligne: | http://agritrop.cirad.fr/477757/ |
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| Résumé: | A 3-dimensional model of sunflower plant is built, which allows simulating the plant-environment relationships and will eventually be a powerful tool for modeling genotype x environment interactions and consequences of planting density. It was built by using mechanisms based on experimental relationships which apply to a wide range of experimental situations. The software simulates spatial and temporal changes in plant architecture. This enables one to analyze the feed-back consequences of temporary light or water deficits on the plant leaf area. For example, a temporary light deficit results in a reduction of leaf expansion rate. This in turn reduces further interception of light by the whole plant and affects, through a feed-back process, the growth rate of newly initiated leaves which were not affected themselves by the light deficit. Our objective is now to simulate the growth of the 3D plant model in permanent interaction with its meteorological environment through bi-directional integration between the "growth-engine" of the simulation of plant architecture and ecophysiological models. This will be done through conception and development of an integrated software. |
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