Geometric plant modelling is crucial in in silico plants. Existing geometric modelling methods have focused on the topological structure and basic organ profiles, simplifying the morphological features. However, the models cannot effectively differentiate cultivars, limiting FSPM application in crop breeding and management. This study proposes a 3D phytomer-based geometric modelling method with maize (Zea Mays) as the representative plant. Specifically, conversion methods between skeleton and mesh models of 3D phytomer are specified. This study describes the geometric modelling of maize shoots and populations by assembling 3D phytomers. Results show that the method can quickly and efficiently construct 3D models of maize plants and populations, with the ability to show morphological, structural and functional differences among four representative cultivars. The method takes into account both the geometric modelling efficiency and 3D detail features to achieve automatic operation of geometric modelling through the standardized description of 3D phytomers. Therefore, this study provides a theoretical and technical basis for the research and application of in silico plants.

中文翻译：

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基于3D phytomer的植物几何建模方法——以玉米为例

几何植物建模对于计算机植物至关重要。现有的几何建模方法主要关注拓扑结构和基本器官轮廓，简化了形态特征。然而，该模型无法有效区分品种，限制了 FSPM 在作物育种和管理中的应用。本研究提出了一种以玉米（Zea Mays）为代表植物的基于3D phytomer的几何建模方法。具体来说，指定了3D phytomer的骨架模型和网格模型之间的转换方法。本研究描述了通过组装 3D phytomers 对玉米芽和种群进行几何建模。结果表明，该方法能够快速、高效地构建玉米植株和群体的3D模型，能够显示四个代表性品种之间的形态、结构和功能差异。该方法兼顾几何建模效率和3D细节特征，通过3D phytomers的标准化描述实现几何建模的自动化操作。因此，本研究为计算机模拟植物的研究和应用提供了理论和技术基础。