Abstract
The paper describes the conceptual models used to understand the processes determining plant growth rates in response to environmental changes. A series of experiments and growth models were used at three organizational levels: the specific plant organs, the whole plant and the plant canopy. The energy conversion efficiency and the total plant carbon balance were first examined. The carbon partitioning amongst the plant parts was then studied. The energy conversion efficiency is generally understood. In modelling carbon partitioning it was first necessary to establish the carbon demand for each plant organ. The carbon partitioned amongst plant organs was then calculated in two ways. The first one based on empirical data consisted in defining which organ received the carbon prior to other organs. The second one was based on the relationship between the carbon mass of specific organs and their trophic activity. This hypothesis allowed the optimization of the carbon partitioning in order to maximize the whole plant growth rate. The opportunities to use these theoretical approaches in plant growth modelling are discussed.
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References
Durand, J.-L. (1987). Modélisation de la production de luzerne et alimentation hydrique.- Thèse de Docteur Ingénieur.- INA P-G. 109p.
Field, C.B. (1987) Placement of nitrogen in foliage elements and utilization of the light resource.- In: Abstracts of the General Lectures, Symposium Papers and Papers presented at the XIV international botanical congress. Section 6–20, p.368.
Gillet, M. (1980). Les Graminées Fourragères. Bordas. 306p.
Gillet, M., Lemaire, G. and Gosse, G. (1984). Essai d'élaboration d'un schéma global de la croissance des graminées fourragères. Agronomic 4: 74–82.
Gosse, G., Chartier, M., Lemaire, G. and Guy, P. (1982). Influence des facteurs climatiques sur la production de luzerne.- Fourrages 90: 113–133.
Gosse, G., Chartier, M., Varlet-Grancher, C. and Bonhomme, R. (1982). Interception dy rayonnement utile à la photosynthèse chez la luzerne: variation et modélisation.- Agronomic 2: 583–588.
Onillon, B. (1988). Croissance et nutrition azotée de la luzerne: étude de la répartition de l'azote dans le peuplement. - Mémoire de DEA. 20 p.
Passioura, J.B. (1977). Accountability, philosophy and plant physiology.- Search 10: 347–350.
Piaget, J. (1967). Biologie et Connaissance. p. 271–283. Gallimard. 510 p.
Thornley, J.H.M. (1977). Root: shoot interactions. In: D.H. Jenning, ed. Integration of Activity in Higher Plants. 367–389. Cambridge University Press.
Varlet-Grancher, C. and Bonhomme, R. (1979). Application aux couverts végétaux des lois de rayonnement en milieu diffusant. II. Interception de l'énergie solaire par une culture.- Annales Agronomiques 30: 1–26.
Vertregt, N. and Penning de Vries, F.W.T. (1987). A rapid method for determining the efficiency of biosynthesis of plant biomass. Journal of Theoretical Biology 128: 109–119.
Volenec, J.J. and Nelson, C.J. (1984). Carbohydrate metabolism in leaf meristems of tall fescue. II. Relationship to leaf elongation rates modified by nitrogen fertilization.- Plant Physiology 74: 595–600.
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Durand, JL., Varlet-Grancher, C., Lemaire, G. et al. Carbon partitioning in forage crops. Acta Biotheor 39, 213–224 (1991). https://doi.org/10.1007/BF00114177
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DOI: https://doi.org/10.1007/BF00114177