Pub Date : 2012-12-01DOI: 10.1109/PMA.2012.6524821
F. Feugier, A. Satake, T. Kinoshita
We study the regulation of sucrose level by shifting the internal circadian related rates of sucrose export, and synthesis and degradation of starch in a leaf. We allow these shifts to change dynamically in order to reduce sucrose starvation in several light/dark cycle conditions. The model successfully reduces starvation in the leaf and show many features similar to observations. Finally we include the leaf model in a phloem network containing a root and a meristem, the three of them connected and exchanging sucrose by osmotic pressure driven flow. The global model allows sucrose sharing among organs and an overall lower starvation level.
{"title":"Dynamical feedback between circadian clock and carbohydrate availability explains adaptive response of starch metabolism to longer night","authors":"F. Feugier, A. Satake, T. Kinoshita","doi":"10.1109/PMA.2012.6524821","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524821","url":null,"abstract":"We study the regulation of sucrose level by shifting the internal circadian related rates of sucrose export, and synthesis and degradation of starch in a leaf. We allow these shifts to change dynamically in order to reduce sucrose starvation in several light/dark cycle conditions. The model successfully reduces starvation in the leaf and show many features similar to observations. Finally we include the leaf model in a phloem network containing a root and a meristem, the three of them connected and exchanging sucrose by osmotic pressure driven flow. The global model allows sucrose sharing among organs and an overall lower starvation level.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127155141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-10-31DOI: 10.1109/PMA.2012.6524846
A. Mathieu, A. Jullien, B. Ney, J. Allirand, Rui Qi
Individual plant models have been developed in recent years to satisfy different objectives. However most of them focus on average plant and do not integrate the variability observed in cultivated fields. Population scale models are often based on very simplified representation of the plant, and most of them remain theoretical. The objective of this work is to use an experimental design to select the main variables driving plant growth in order to use them as key factors in a plant population scale model. Destructive and non-destructive measurements were carried out from February to June. Measured variables are commonly used in such models. In our experimental conditions, local density has little impact on model outputs. On the contrary, the plant initial size is highly correlated to final height, dry mass and number of ramifications. This result confirms that variability within the field is very dependent on plant development at the first stages.
{"title":"Assessment of the Role of initial conditions in the setting of heterogeneity of functional Traits in a population of oilseed rape plants","authors":"A. Mathieu, A. Jullien, B. Ney, J. Allirand, Rui Qi","doi":"10.1109/PMA.2012.6524846","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524846","url":null,"abstract":"Individual plant models have been developed in recent years to satisfy different objectives. However most of them focus on average plant and do not integrate the variability observed in cultivated fields. Population scale models are often based on very simplified representation of the plant, and most of them remain theoretical. The objective of this work is to use an experimental design to select the main variables driving plant growth in order to use them as key factors in a plant population scale model. Destructive and non-destructive measurements were carried out from February to June. Measured variables are commonly used in such models. In our experimental conditions, local density has little impact on model outputs. On the contrary, the plant initial size is highly correlated to final height, dry mass and number of ramifications. This result confirms that variability within the field is very dependent on plant development at the first stages.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126568877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-10-31DOI: 10.1109/PMA.2012.6524853
Sainte-Marie J, Henrot A, Barrandon M Lnstitut, Elie Cartan Nouvellon, Roupsard Laclau, J-P Saint-Andre, Eco Sols, Clrad Montpellier, France
The aim is to propose a dynamic model of forest growth and biomass suitable to varied ecosystems with different species, soil types, climate conditions and forest managements. This model is combining different approaches (growth & yield, process-based and biogeochemical cycles) to take into account carbon, water and nutrient cycles and to include several processes such as wood production, transpiration, litterfall, litter decomposition or losses of nutrients by drainage. Such a model is necessary to anticipate and adapt forest management under different environmental and management scenarii (global changes).
{"title":"Modeling the environmental and seasonal influence on canopy dynamic and litterfall of even-aged forest ecosystems by a model coupling growth & yield and process-based approaches","authors":"Sainte-Marie J, Henrot A, Barrandon M Lnstitut, Elie Cartan Nouvellon, Roupsard Laclau, J-P Saint-Andre, Eco Sols, Clrad Montpellier, France","doi":"10.1109/PMA.2012.6524853","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524853","url":null,"abstract":"The aim is to propose a dynamic model of forest growth and biomass suitable to varied ecosystems with different species, soil types, climate conditions and forest managements. This model is combining different approaches (growth & yield, process-based and biogeochemical cycles) to take into account carbon, water and nutrient cycles and to include several processes such as wood production, transpiration, litterfall, litter decomposition or losses of nutrients by drainage. Such a model is necessary to anticipate and adapt forest management under different environmental and management scenarii (global changes).","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125217248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-10-31DOI: 10.1109/PMA.2012.6524827
Liqi Han, E. Costes, F. Boudon, T. Cokelaer, C. Pradal, D. Da Silva, R. Faivre
MAppleT is a functional-structural plant model that has been built for simulating architectural development of apple trees. It has the capability of representing tree growth within a virtual space where the development of individual organs depends on geometrical traits. The purpose of this research is to investigate the influence of apple trees' architectural variability on their light interception efficiency. The STAR, i.e. the silhouette to total area ratio, of leaves, was chosen to evaluate the level of such efficiency. The strategy is to integrate MAppleT with the light interception model provided by the Fractalysis module of the VPlants software library. Target values of four major traits (internode length, leaf area, branching angle and top shoot diameter), are varied in range previously observed in a segregating population of apple hybrids. A sensitivity analysis based on polynomial and generalized additive models was performed for highlighting the most influential trait on light interception. The contribution of stochastic processes that control tree topology in MAppleT is also investigated in the sensitivity analysis. This study not only provides a time- and resource-saving alternative for data collection, but also sets a methodology for ideotype definition and further genetic improvement of apple trees.
{"title":"Investigating the influence of geometrical traits on light interception efficiency of apple trees: A modelling study with MAppleT","authors":"Liqi Han, E. Costes, F. Boudon, T. Cokelaer, C. Pradal, D. Da Silva, R. Faivre","doi":"10.1109/PMA.2012.6524827","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524827","url":null,"abstract":"MAppleT is a functional-structural plant model that has been built for simulating architectural development of apple trees. It has the capability of representing tree growth within a virtual space where the development of individual organs depends on geometrical traits. The purpose of this research is to investigate the influence of apple trees' architectural variability on their light interception efficiency. The STAR, i.e. the silhouette to total area ratio, of leaves, was chosen to evaluate the level of such efficiency. The strategy is to integrate MAppleT with the light interception model provided by the Fractalysis module of the VPlants software library. Target values of four major traits (internode length, leaf area, branching angle and top shoot diameter), are varied in range previously observed in a segregating population of apple hybrids. A sensitivity analysis based on polynomial and generalized additive models was performed for highlighting the most influential trait on light interception. The contribution of stochastic processes that control tree topology in MAppleT is also investigated in the sensitivity analysis. This study not only provides a time- and resource-saving alternative for data collection, but also sets a methodology for ideotype definition and further genetic improvement of apple trees.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121475067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-10-31DOI: 10.1109/PMA.2012.6524823
C. Fournier, C. Pradal
Unlike trees, the 3D architecture of gramineous plants is much more related to the shapes of its leaves than the arrangement of its branches. Many modelling efforts have thus concentrated on correctly capturing its complex shape at different stages and use them as scalable geometric primitives. Still, additional control of such objects is needed in the context of Functional Structural Modelling. The objective of this work is to propose a plastic and dynamic 3D leaf model that is well suited for such uses, still able to capture a variety of observed static shapes. Leaf shape is modeled by a parametric surface describing leaf midrib curvature, leaf width variation, undulation of leaf margins and twist along the midrib. Meshes can be generated from these surfaces, and reduced using a decimation algorithm. The model can be fitted with data or with curves drawn by user interaction. Morphological operators are defined and allows for plastic deformation of the control curves. The dynamics of shape acquisition can also be specified, and combined with morphological operators to simulate various scenarios of evolution and responses to stresses. The capabilities of the model are demonstrated through several cases of use. Future directions of research are thought to be a better integration of mechanical or physiological constraints that would reduce the model plasticity but avoid user-induced unrealistic simulation.
{"title":"A plastic, dynamic and reducible 3D geometric model for simulating gramineous leaves","authors":"C. Fournier, C. Pradal","doi":"10.1109/PMA.2012.6524823","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524823","url":null,"abstract":"Unlike trees, the 3D architecture of gramineous plants is much more related to the shapes of its leaves than the arrangement of its branches. Many modelling efforts have thus concentrated on correctly capturing its complex shape at different stages and use them as scalable geometric primitives. Still, additional control of such objects is needed in the context of Functional Structural Modelling. The objective of this work is to propose a plastic and dynamic 3D leaf model that is well suited for such uses, still able to capture a variety of observed static shapes. Leaf shape is modeled by a parametric surface describing leaf midrib curvature, leaf width variation, undulation of leaf margins and twist along the midrib. Meshes can be generated from these surfaces, and reduced using a decimation algorithm. The model can be fitted with data or with curves drawn by user interaction. Morphological operators are defined and allows for plastic deformation of the control curves. The dynamics of shape acquisition can also be specified, and combined with morphological operators to simulate various scenarios of evolution and responses to stresses. The capabilities of the model are demonstrated through several cases of use. Future directions of research are thought to be a better integration of mechanical or physiological constraints that would reduce the model plasticity but avoid user-induced unrealistic simulation.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124759472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-10-01DOI: 10.1109/PMA.2012.6524861
O. Taugourdeau, J. Barczi, Yves Caraglio
Context: Architectural studies highlight recurrent morphogenetical gradients that are observed on some tree species. These morphogenetical gradients are linked to morphological trends among successive shoots throughout plant structure and ontogeny. This study aims at testing a potential origin of these gradients as the complex result of some core plant functions. It will be achieved through a minimalist mathematical modelling approach.
{"title":"Simulation of morphogenetical gradients using a minimal functional-structural plant model (FSPM)","authors":"O. Taugourdeau, J. Barczi, Yves Caraglio","doi":"10.1109/PMA.2012.6524861","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524861","url":null,"abstract":"Context: Architectural studies highlight recurrent morphogenetical gradients that are observed on some tree species. These morphogenetical gradients are linked to morphological trends among successive shoots throughout plant structure and ontogeny. This study aims at testing a potential origin of these gradients as the complex result of some core plant functions. It will be achieved through a minimalist mathematical modelling approach.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125064008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-10-01DOI: 10.1109/PMA.2012.6524807
M. Allani, M. Jabloun, A. Sahli, V. Hennings, J. Maßmann, H. Muller
The study represents a diagnostical analysis of the water use at a farm level, which is a necessary step in the development and implementation of strategies to improve the management of irrigation water at an irrigation district scale. The work has focused on a case study, namely the irrigated district of Cherfech located in the governorate of Ariana, 25 km away from Tunis. The analysis concerns 63 farms covering an area of 850 ha during the 2010-2011 crop season. The achievement of this analysis was made possible using the MABIA-REGION software. Thus, daily Penman-Monteith reference evapotranspiration (ET0), effective precipitation (PE), dual crop coefficients (Kc=Ke+Kcb), potential and actual crop evapotranspiration (ETc and ETa) and net and gross irrigation requirements (NIR and GIR) were estimated for the different study levels (plot, farm and district) using spatially distributed parameters on the climate, crop, soil characteristics, irrigation system, growing season and basic irrigation management practice. These different outputs were also spatially represented using the GIS-Mod tool implemented in MABIA-REGION. The results obtained show that the irrigation's practice was seasonally variable. Thus, during the winter season, the irrigations practiced was far exceeded the irrigation water requirement estimated by MABIA-Region. While during the summer season, the irrigations carried have merely covered 44% of irrigation water requirements. Also, the study reveals a high variability in the practice of irrigation between different cultures and different farms.
{"title":"Enhancing on farm and regional irrigation management using MABIA-Region tool","authors":"M. Allani, M. Jabloun, A. Sahli, V. Hennings, J. Maßmann, H. Muller","doi":"10.1109/PMA.2012.6524807","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524807","url":null,"abstract":"The study represents a diagnostical analysis of the water use at a farm level, which is a necessary step in the development and implementation of strategies to improve the management of irrigation water at an irrigation district scale. The work has focused on a case study, namely the irrigated district of Cherfech located in the governorate of Ariana, 25 km away from Tunis. The analysis concerns 63 farms covering an area of 850 ha during the 2010-2011 crop season. The achievement of this analysis was made possible using the MABIA-REGION software. Thus, daily Penman-Monteith reference evapotranspiration (ET0), effective precipitation (PE), dual crop coefficients (Kc=Ke+Kcb), potential and actual crop evapotranspiration (ETc and ETa) and net and gross irrigation requirements (NIR and GIR) were estimated for the different study levels (plot, farm and district) using spatially distributed parameters on the climate, crop, soil characteristics, irrigation system, growing season and basic irrigation management practice. These different outputs were also spatially represented using the GIS-Mod tool implemented in MABIA-REGION. The results obtained show that the irrigation's practice was seasonally variable. Thus, during the winter season, the irrigations practiced was far exceeded the irrigation water requirement estimated by MABIA-Region. While during the summer season, the irrigations carried have merely covered 44% of irrigation water requirements. Also, the study reveals a high variability in the practice of irrigation between different cultures and different farms.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129275795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-10-01DOI: 10.1109/PMA.2012.6524813
G. Brunel, P. Borianne, G. Subsol, M. Jaeger, Y. Caraglio
Automated analysis of wood anatomical sections is of great interest in understanding the growth and development of plants. In this paper, we propose a novel method to characterize the cell organization in light microscopic wood section images. It aims to identify automatically the cell file in a context of mass treatment. The originality of the proposed method is our cell classification process. Unlike many supervised methods, our method is self conditioned, based on a decision tree which thresholds are automatically evaluated according to specific biological characteristics of each image. In order to evaluate the performances of the proposed system and allow the certification of the cell line detection, we introduced indices of quality characterizing the accuracy of results and parameters of these results. Those are related to topological and geometrical characters of the cell file at both global and local scales. Moreover, we propose an index of certainty for selective results exploitation in further statistical studies. The proposed method was is implemented as a plugin for ImageJ. Tests hold on various wood section well contrasted images show good results in terms of cell file detection and process speed.
{"title":"Automatic characterization of the cell organization in light microscopic images of wood: Application to the identification of the cell file","authors":"G. Brunel, P. Borianne, G. Subsol, M. Jaeger, Y. Caraglio","doi":"10.1109/PMA.2012.6524813","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524813","url":null,"abstract":"Automated analysis of wood anatomical sections is of great interest in understanding the growth and development of plants. In this paper, we propose a novel method to characterize the cell organization in light microscopic wood section images. It aims to identify automatically the cell file in a context of mass treatment. The originality of the proposed method is our cell classification process. Unlike many supervised methods, our method is self conditioned, based on a decision tree which thresholds are automatically evaluated according to specific biological characteristics of each image. In order to evaluate the performances of the proposed system and allow the certification of the cell line detection, we introduced indices of quality characterizing the accuracy of results and parameters of these results. Those are related to topological and geometrical characters of the cell file at both global and local scales. Moreover, we propose an index of certainty for selective results exploitation in further statistical studies. The proposed method was is implemented as a plugin for ImageJ. Tests hold on various wood section well contrasted images show good results in terms of cell file detection and process speed.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128175993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-10-01DOI: 10.1109/PMA.2012.6524859
F. Matsunaga, M. Rakocevic, J. Brancher
Yerba-mate (Ilex paraguariensis St. Hil.) is a subtropical, evergreen, dioecious, South-American tree, and an economically important species, whose leaves and twigs are extensively used as a primary material in the preparation of diverse beverages. Its architecture is defined by Rauh's model, which comprises the rhythmic growth, and consequently, the existence of growth units. The aims of this study were to define the mathematical functions for growth unit formation related to various morphological parameters, to interpolate the 3D reconstructions for two-year period and to calculate the leaf/fine twig production of males and females cultivated in two contrasting environments (monoculture - and forest understory). For this purpose, InterpolMateS1, one deterministic and empirical model, has been developed. It interpolates the structural reconstructions of plants in 3D based on several known growth stages, and estimates the plant production for beverage industry. Various morphological characters were defined to parameterize the InterpolMateS1: metamer number, individual leaf size, main axes elongation, leaf number increase per axes, total leaf area, leaf shed per axes and branching. The VPlants and PlantGLViewer software were used for plant codifying and 3D reconstruction, while the modules of InterpolMateS1 were written in NetBeans IDE (Java). The cubic splines functions fitted correctly with the observed values of morphological characters during four growth flushes in two-year continuum. The out-put of useful biomass production in InterpolMateS1 was related to mock-up leaf area, fine branch volume and various forest productive parameters (i.e., specific leaf area, specific wood mass). The next steps in development of this forestry/agronomy useful software consider the coupling of yerba-mate mock-ups with carbon gain and storage on plant and landscape scale for two environments - monoculture and forest understory.
巴拉圭马黛茶(Ilex paraguariensis St. hill .)是一种亚热带、常绿、雌雄异株的南美树种，是一种重要的经济树种，其叶子和细枝被广泛用作制备各种饮料的主要材料。它的建筑由rah的模型定义，包括有节奏的生长，因此，生长单元的存在。本研究的目的是定义与各种形态参数相关的生长单位形成的数学函数，对两年的三维重建进行插值，并计算在两种不同环境(单作和森林林下)中栽培的雄性和雌性的叶片/细枝产量。为此，开发了一种确定性和经验模型InterpolMateS1。它根据几个已知的生长阶段在3D中插值植物的结构重建，并估计饮料工业的植物产量。定义了不同的形态特征来参数化InterpolMateS1:元聚体数、单叶大小、主轴伸长、每轴叶数增加、总叶面积、每轴叶棚和分枝。使用VPlants和PlantGLViewer软件进行植物编码和三维重建，使用NetBeans IDE (Java)编写InterpolMateS1模块。三次样条函数与连续2年4个生长期的形态特征观测值拟合较好。在InterpolMateS1中，有用生物量产量的输出与模拟叶面积、细枝体积和各种森林生产参数(即比叶面积、比木材质量)有关。开发这一林业/农学有用软件的下一个步骤是考虑在植物和景观尺度上对两种环境-单一栽培和森林下层植被-的马黛茶模型与碳增益和储存的耦合。
{"title":"InterpolMateS1- The module for interpolation of growth and production of yerba-mate","authors":"F. Matsunaga, M. Rakocevic, J. Brancher","doi":"10.1109/PMA.2012.6524859","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524859","url":null,"abstract":"Yerba-mate (Ilex paraguariensis St. Hil.) is a subtropical, evergreen, dioecious, South-American tree, and an economically important species, whose leaves and twigs are extensively used as a primary material in the preparation of diverse beverages. Its architecture is defined by Rauh's model, which comprises the rhythmic growth, and consequently, the existence of growth units. The aims of this study were to define the mathematical functions for growth unit formation related to various morphological parameters, to interpolate the 3D reconstructions for two-year period and to calculate the leaf/fine twig production of males and females cultivated in two contrasting environments (monoculture - and forest understory). For this purpose, InterpolMateS1, one deterministic and empirical model, has been developed. It interpolates the structural reconstructions of plants in 3D based on several known growth stages, and estimates the plant production for beverage industry. Various morphological characters were defined to parameterize the InterpolMateS1: metamer number, individual leaf size, main axes elongation, leaf number increase per axes, total leaf area, leaf shed per axes and branching. The VPlants and PlantGLViewer software were used for plant codifying and 3D reconstruction, while the modules of InterpolMateS1 were written in NetBeans IDE (Java). The cubic splines functions fitted correctly with the observed values of morphological characters during four growth flushes in two-year continuum. The out-put of useful biomass production in InterpolMateS1 was related to mock-up leaf area, fine branch volume and various forest productive parameters (i.e., specific leaf area, specific wood mass). The next steps in development of this forestry/agronomy useful software consider the coupling of yerba-mate mock-ups with carbon gain and storage on plant and landscape scale for two environments - monoculture and forest understory.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123489246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-10-01DOI: 10.1109/PMA.2012.6524840
G. Lobet, L. Pagès, X. Draye
We present here a new model, PlaNet-Maize, which encompasses the entire soil-plant-atmosphere continuum with a resolution down to individual plant organ segments. The model simulates the growth and development of an individual maize plant, including water uptake dynamics and regulation. We successfully used the model to simulate the influence of root system size on the water status of individual plant organs. Moreover, the model was used to assess the contribution of different regulatory processes acting on the hydraulic radial conductivities and axial conductances.
{"title":"A modeling approach to determine the contribution of plant hydraulic conductivities on the water uptake dynamics in the soil-plant-atmosphere system","authors":"G. Lobet, L. Pagès, X. Draye","doi":"10.1109/PMA.2012.6524840","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524840","url":null,"abstract":"We present here a new model, PlaNet-Maize, which encompasses the entire soil-plant-atmosphere continuum with a resolution down to individual plant organ segments. The model simulates the growth and development of an individual maize plant, including water uptake dynamics and regulation. We successfully used the model to simulate the influence of root system size on the water status of individual plant organs. Moreover, the model was used to assess the contribution of different regulatory processes acting on the hydraulic radial conductivities and axial conductances.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124021273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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