Three-dimensional modelling of salt stress effects on the tomato canopy development

盐胁迫对植物造成重要的形态变化，对光截获和作物生产力具有巨大的影响。因此，在旨在克服盐分诱导的减产的策略中包括形态信息是很重要的。对于番茄等空间异质性作物来说，情况尤其如此。本项目的目的是对盐分诱导的对番茄产量有重要影响的形态变化有一个完整的理解。因此，我们希望使用Lsystem形式主义来概念化一个在盐胁迫下生长的番茄的建筑模型。植物的发育将被模拟为器官外观、扩张、衰老以及几何细节的综合，如三维器官的定位、取向和形状。这些事件中的每一个都将根据盐度、温度、蒸汽压差或光照进行建模。这些环境因素对树冠发育的影响将通过五个实验来研究，其中四个将用于模式参数化，一个用于模式评估。该模型将作为计算机模拟的研究工具，以便生成描述植物在不同环境情景下的行为的假设性陈述，并分析简化模型的可能性。

Salt stress causes important morphological alterations on plants, with tremendous implications for light interception and crop productivity. It is therefore important to include morphological information in strategies aiming to overcome salinity-induced yield reduction. This is especially true for spatially heterogeneous crops such as tomato. The purpose of this project is to develop an integrated understanding of salinity-induced morphological alterations significant for the tomato productivity. Therefore we want to conceptualise an architectural model of the tomato growing under salt stress using Lsystem formalism. Plant development will be modelled as an integration of organ appearance, expansion, senescence as well as geometrical details such as 3-D organ positioning, orientation and shape. Each of these events will be modelled depending on salinity, temperature, vapour pressure deficit or light. The effects of these environmental factors on canopy development will be investigated in five experiments, four of which will be used for model parameterisation and one for model evaluation. The model will serve as a research tool in computer simulations in order to generate hypothetical statements describing the behaviour of the plant under different environmental scenarios and analyse possibilities for model simplification.