2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications最新文献_第3页

Determining photosynthetic limitations under saturated and non-saturated light conditions 确定在饱和和非饱和光条件下的光合作用限制

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524818

Tsu-Wei Chen, H. Stȕtzel, K. Kahlen

{"title":"Determining photosynthetic limitations under saturated and non-saturated light conditions","authors":"Tsu-Wei Chen, H. Stȕtzel, K. Kahlen","doi":"10.1109/PMA.2012.6524818","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524818","url":null,"abstract":"Photosynthesis is limited by CO<inf>2</inf> if chloroplastic CO<inf>2</inf> concentration (C<inf>c</inf>) is lower than the intersection point (C<inf>ctr</inf>) in the Farquhar-von Caemmerer-Berry (FvCB) model. This range is defined as light-saturated conditions. If C<inf>c</inf> > C<inf>ctr</inf>, photosynthesis is limited mainly by light (non-light-saturated conditions). Therefore, the relationship between C<inf>c</inf> and C<inf>ctr</inf> can reveal whether photosynthesis is limited by light or CO<inf>2</inf>. In this work, a process to identify the photosynthetic limitation was illustrated based on the relationship between C<inf>c</inf> and C<inf>ctr</inf>. We described C<inf>ctr</inf> as a function of light and biochemical parameters (V<inf>cmax</inf>) in the FvCB model and simulated the C<inf>ctr</inf>-light response with different sets of FvCB parameters. Results of simulations indicated that photosynthesis is limited by light when V<inf>cmax</inf> is above 120 (µmol CO<inf>2</inf> m<sup>−2</sup>s<sup>−1</sup>), and a decrease of V<inf>cmax</inf> increases the limitations from CO<inf>2</inf> diffusion pathways. We show data that photosynthesis of young cucumber leaves (10–14 days) was limited by light, and limitation caused by CO<inf>2</inf> started on day 14 after leaf appearance.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114350155","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}

引用次数: 1

ArchiSimple: A parsimonious model of the root system architecture archissimple:根系统架构的简约模型

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524849

L. Pagès, D. Moreau, V. Sarlikioti, H. Boukcim, C. Nguyen

引用次数: 10

Analysing global climatic change and its impact on fruit tree phenology using ClimaTree tool: Example of Anna apple tree under Tunisian conditions 利用ClimaTree工具分析全球气候变化及其对果树物候的影响:以突尼斯条件下的Anna苹果树为例

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524810

E. Bairam, A. Sahli, H. Sahli

{"title":"Analysing global climatic change and its impact on fruit tree phenology using ClimaTree tool: Example of Anna apple tree under Tunisian conditions","authors":"E. Bairam, A. Sahli, H. Sahli","doi":"10.1109/PMA.2012.6524810","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524810","url":null,"abstract":"Fruit trees development depends on climatic conditions, and the temperature regime on phenological phases. This study aims at (i) developing a software “Climatree®” to predict the occurrence of the phenological stages of tree fruits, (ii) analyzing the trend of chilling and heat accumulation during the last twenty years, (iii) estimating rest completion, flowering and ripening dates under real weather conditions. In particular, we focus on the study of an early apple cultivar “Anna”, for its chilling requirements for breaking dormancy and heat requirements for flowering and fruit maturing, and (iv) analyzing the effects of global warming on the timing of these phenological stages. The validity of the climate change hypothesis was tested using a climate database. Results pointed out a linear decrease in chilling accumulation during autumn and winter, and a linear increase in heat accumulation during spring. This was observed for all the studied sites. This might confirm the climatic warming in the Mediterranean area during the past years. The theoretical impact of the predicted climate warming on fruit trees phenology is also proposed by using four simple scenarios (theorical increase of both daily maximum-minimum historical temperatures by 0.5, 1.0, 1.5 and 2°C, respectively). For this purpose, the case of an early budbreak apple cultivar “Anna” was chosen. Based on the cultivar's chilling and heat requirements, the software simulations indicated a delay in the bud burst date, and a shortening in time of flowering and ripening.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125057791","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}

引用次数: 2

Seasonal leaf area index variations derived from needle growth and fall measurements in two eastern white pine (Pinus Strobes L.) stands 两个东部白松林分针叶生长和落叶测量的叶面积指数季节变化

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524866

Rong Wang, J. Chen

{"title":"Seasonal leaf area index variations derived from needle growth and fall measurements in two eastern white pine (Pinus Strobes L.) stands","authors":"Rong Wang, J. Chen","doi":"10.1109/PMA.2012.6524866","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524866","url":null,"abstract":"Existing global leaf area index (LAI) products have a common problem of too large seasonal variations for conifer stands. The seasonal variation of remotely sensed LAI is often distorted due to many confounding factors. We propose a methodology to quantify the LAI seasonal pattern based on needle lifespan and meteorological conditions. In this paper, we test this methodology in two conifer stands in Ontario, Canada. Needle growth and senescence rates were quantified from needle elongation measurements and litterfall collection. By measuring the average needle lifespan and assuming a dynamic equilibrium of LAI for the full annual cycle, the amount of needles renewed annually can be estimated. Then it is seasonally ‘distributed’ based on these two rates in order to reckon seasonal variations of new and old needle cohorts. These measured LAI seasonal trajectories were compared with combined measurements by TRAC (Tracing Radiation and Architecture of Canopies) and LAI 2000 plant canopy analyzer. The difference between peak LAI from needle growth and fall and that from optical instruments is constrained within 15%. Meanwhile, LAI values from needle growth and fall beyond the growing season are not fallaciously low like LAI from remote sensing data, resulting in a more realistic seasonal variation of needles than that is retrieved from algorithms using remote sensing data. We believe this study can be a positive step towards improving global LAI mapping.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128387583","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}

引用次数: 3

ProNet-CN model: A dynamic and multi-scale process network combining photosynthesis, primary carbon metabolism and effects of leaf nitrogen status ProNet-CN模型:一个结合光合作用、初级碳代谢和叶片氮状态影响的动态多尺度过程网络

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524848

J. Muller, A. Eschenroder, O. Christen, B. Junker, F. Schreiber

{"title":"ProNet-CN model: A dynamic and multi-scale process network combining photosynthesis, primary carbon metabolism and effects of leaf nitrogen status","authors":"J. Muller, A. Eschenroder, O. Christen, B. Junker, F. Schreiber","doi":"10.1109/PMA.2012.6524848","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524848","url":null,"abstract":"Integrating the hierarchical organization of metabolic and physiological plant processes into crop models is a task that is not solved satisfactorily up to now. To this aim here we present a new multi-scale crop systems biology model. This integrative whole plant modeling framework is based on a complex, hierarchically structured modular process model network considering carbon metabolism and leaf nitrogen status: the ProNet-CN model. ProNet-CN combines the nitrogen sensitive photosynthesis and transpiration model LEAFC3-N with modules describing the dynamics of mass balances of main functional carbon compounds and its allocation between interacting source and sink organs. On this basis, biomass formation of the individual plant organs and of the whole plant is calculated. The Matlab® Simulink modeling environment was proved to provide an appropriate platform for the development of a system of hierarchically nested dynamic models covering processes at the cellular, organ-based and whole plant level. ProNet-CN was verified and parameterized based on comprehensive data from all process levels considered. Further extension of the nitrogen part of the model and detailed calibration and validation of the model against organ based data on the dynamics of main carbon and nitrogen compounds and on dry mass formation in barley is in progress.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134265352","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}

引用次数: 6

Fruit size in relation to competition for resources: A common model shared by two species and several genotypes grown under contrasted carbohydrate levels 果实大小与资源竞争的关系:在对比碳水化合物水平下生长的两个物种和几个基因型共享的共同模型

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524850

Marion Prudent, Zhanwu Dai, Philippe Vivin, M. Génard, Nadia Bertin, M. Causse

{"title":"Fruit size in relation to competition for resources: A common model shared by two species and several genotypes grown under contrasted carbohydrate levels","authors":"Marion Prudent, Zhanwu Dai, Philippe Vivin, M. Génard, Nadia Bertin, M. Causse","doi":"10.1109/PMA.2012.6524850","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524850","url":null,"abstract":"Fruit size is one important criterion of fruit external quality affecting consumer acceptance. The effects of seed number on fruit size in two fleshy fruits, grape and tomato, of different genotypes and grown under distinct carbohydrate availability levels were analyzed with a model. The two-parameter model described within-fruit resource competition and was able to well represent the commonly observed decrease in fresh weight per seed along with the increase in number of seeds, regardless of species, genotypes, and carbohydrate levels that were evaluated in this study. However, carbohydrate levels largely modified the correlation between seed number and fresh weight per fruit. In grape, lowering carbohydrate level led to a decrease in the parameter reflecting the potential fresh weight per seed, while in tomato, the response to carbohydrate was genotype-dependent and concerned more the parameter reflecting the competition level for resources. The values of the latter parameter suggested an under-compensating competition for resources in domesticated grape and tomato genotypes. Finally, co-localizations among quantitative trait loci for fruit fresh weight and model parameters indicated that plant susceptibility to competition could underlie the fruit fresh weight determination.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114246275","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}

引用次数: 2

Variability of pea morphogenesis. An exploratory study based on six pea genotypes with contrasting architectures 豌豆形态发生的变异。六种豌豆基因型结构对比的探索性研究

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524811

R. Barillot, V. Chevalier, D. Combes, G. Louarn, A. Escobar-Gutiérrez

{"title":"Variability of pea morphogenesis. An exploratory study based on six pea genotypes with contrasting architectures","authors":"R. Barillot, V. Chevalier, D. Combes, G. Louarn, A. Escobar-Gutiérrez","doi":"10.1109/PMA.2012.6524811","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524811","url":null,"abstract":"Pea is the main legume species grown in European agricultural systems although its productivity is limited due to foliar diseases or lodging. Architectural plant models therefore appeared to be suitable tools for studying the behaviour of contrasting pea architecture against environmental factors. We characterized the growth of six contrasting pea genotypes in order to analyse their developmental rules that are needed to build up such functional-structural models. Virtual plant models were reconstructed from digitization of the pea cultivars along their growing cycle, resulting in a database of 950 mock-ups. Pea cultivars exhibited contrasting architectures in terms of green area, plant height and growth rates. Three categories of growth habits were identified among the experimented cultivars which were distinguished according to their earliness, leaf type and axis development. The present study highlights the strong genotypic variability of pea architecture and also provides a quantitative description of pea morphogenesis that can be used to build functional-structural models. Moreover, these contrasting architectures also allowed us to assess the behaviour of different pea cultivar towards environmental factors.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116311199","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}

引用次数: 1

Phloem sap flow and carbohydrate transport in vascular plants: A generic surface model 维管植物韧皮部液流和碳水化合物运输:一个通用的表面模型

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524854

Damien Sellier, J. Harrington

引用次数: 0

Assessment of parameter uncertainty in plant growth model identification 植物生长模式识别中参数不确定性的评估

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524817

Yuting Chen, P. Cournède

{"title":"Assessment of parameter uncertainty in plant growth model identification","authors":"Yuting Chen, P. Cournède","doi":"10.1109/PMA.2012.6524817","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524817","url":null,"abstract":"For the parametric identification of plant growth models, we generally face limited or uneven experimental data, and complex nonlinear dynamics. Both aspects make model parametrization and uncertainty analysis a difficult task. The Generalized Least Squares (GLS) estimator is often used since it can provide estimations rather rapidly with an appropriate goodness-of-fit. However, the confidence intervals are generally calculated based on linear approximations which make the uncertainty evaluation unreliable in the case of strong nonlinearity. A Bayesian approach, the Convolution Particle Filtering (CPF), can thus be applied to estimate the unknown parameters along with the hidden states. In this case, the posterior distribution obtained can be used to evaluate the uncertainty of the estimates. In order to improve its performance especially with stochastic models and in the case of rare or irregular experimental data, a conditional iterative version of the Convolution Particle Filtering (ICPF) is proposed. When applied to the Log Normal Allocation and Senescence model (LNAS) with sugar beet data, the two CPF related approaches showed better performance compared to the GLS method. The ICPF approach provided the most reliable estimations. Meanwhile, two sources of the estimation uncertainty were identified: the variance generated by the stochastic nature of the algorithm (relatively small for the ICPF approach) and the residual variance partly due to the noise models.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123448919","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}

引用次数: 9

Adaptation and application of soybean phenology model in the north China spring soybean producing area 大豆物候模型在华北春大豆产区的适应与应用

2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications Pub Date : 2012-10-01 DOI: 10.1109/PMA.2012.6524870

C. Wang, Xiao Yan, BaoGui Zhang

{"title":"Adaptation and application of soybean phenology model in the north China spring soybean producing area","authors":"C. Wang, Xiao Yan, BaoGui Zhang","doi":"10.1109/PMA.2012.6524870","DOIUrl":"https://doi.org/10.1109/PMA.2012.6524870","url":null,"abstract":"Accurate prediction of the development is essential for managing production practices such as determination of optimal planting date, choice of appropriate cultivar for a specific site. The phenology model SOYDEV, considering the responses of development to temperature and photoperiod, was adapted in the north China spring soybean producing area. A 2-year cultivar × location field experiment and a 2-year sowing dates experiment were conducted in this area. Using the model, we simulated cultivars designated as early, early-medium, medium and late maturity classes in the north China spring soybean area, which corresponded to maturity groups (MG) MG II, MG III and MG IV and MG V respectively. By holding other parameters constant, a single parameter, the maximum developmental rate at optimum temperature and photoperiod (Rmax), was optimized on maturity group level and the resulting values gave acceptable predictions of phenological stages of R0, R1 and R7 with root mean square errors (RMSE) within 7 days. Cultivar specific optimization of Rmax and photoperiod response parameters improved further the prediction of R0, R1, R3.5, R5 and R7 with RMSE being less than 2 days. It is concluded that the simplified approach for parameter optimization can improve the simulation accuracy for a better prediction of soybean development and be helpful for phenology prediction in the north China spring soybean producing area.","PeriodicalId":117786,"journal":{"name":"2012 IEEE 4th International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130401482","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}

引用次数: 0