caa a22 4500 477109675 CHVBK 20180405111605.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF02257565 doi (NATIONALLICENCE)springer-10.1007/BF02257565 Modelling whole-plant allocation in relation to carbon and nitrogen supply: Coordination versus optimization: Opinion [Elektronische Daten] [James Reynolds, Jialin Chen] One of the few integrating theories related to allocation is the hypothesis of optimization. While optimization theory has great heuristic appeal and has been used to describe a range of physiological and ecological phenomena, it has major limitations. Optimization is necessarily based on a definite time integral and an optimal control strategy must be specific to the same patterns exhibited by the driving variables over this same period of time. Optimization tends to employ the use of oversimplifications in order to facilitate analytical solutions to the optimal control strategy, i.e. the mechanism governing the response of plants, which is the critical issue of interest. It is difficult to define objective criteria that can account for the natural variability in plants and testing the quantitative predictions of optimality models is also difficult. Thus, we suggest that optimization theory is too limited for practical use in modelling whole plant allocation. In this paper, we introduce the use of coordination theory as a practical alternative. We develop a simple plant growth allocation model using both coordination and optimization approaches and show that coordination theory is easily applied, produces results that are quantitatively similar to optimization, and overcomes the inherent limitations of optimization theory. Kluwer Academic Publishers, 1996 balanced activity nationallicence optimal control theory nationallicence plant growth nationallicence root-shoot ratio nationallicence Reynolds James Department of Botany, Phytotron Building, Duke University, 27708-0340, Durham, NC, USA aut Chen Jialin Department of Botany, Phytotron Building, Duke University, 27708-0340, Durham, NC, USA aut Plant and Soil Kluwer Academic Publishers 185/1(1996-03-01), 65-74 0032-079X 185:1<65 1996 185 11104 https://doi.org/10.1007/BF02257565 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02257565 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reynolds James Department of Botany, Phytotron Building, Duke University, 27708-0340, Durham, NC, USA aut NATIONALLICENCE 700 1- Chen Jialin Department of Botany, Phytotron Building, Duke University, 27708-0340, Durham, NC, USA aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers 185/1(1996-03-01), 65-74 0032-079X 185:1<65 1996 185 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer