【摘要】 构建基于形态特征参数的水稻根系几何模型,实现不同生长条件下水稻根系生长动态的三维可视化。本文通过分析水稻根尖生长随生育进程的变化模式,构建了水稻单根三维显示模型,包括根节点初始位置和生长方向的确定以及根轴的空间模拟等;进一步结合水稻根系拓扑结构,以生长度日(GDD)为驱动因子,建立了水稻根系三维重构模型,包括不定根初始发生时间和位置、不定根初始伸展角度、不定根伸长速率、不定根空间分布模型等;然后在Visual C++环境下,结合可视化显示模块、场景控制模块、人机交互界面和数据库模块等,研制了水稻根系三维可视化生长系统,并基于三维可视化生长系统模拟了不同条件下水稻根系的三维形态。研究结果为建立完整水稻植株可视化生长系统奠定了基础,同时也有助于为其他作物根系的可视化研究提供参考。更多还原

【Abstract】 The objective of this paper was to develop a morphological parameter-based root geometric model of rice and realize the dynamic three-dimensional visualization of rice roots under different growth conditions.The three-dimensional display model of single root of rice was developed by analyzing the change patterns of root-tip growth with development progress,including the sub-models of initial location and growth orientation of root node,and the spatial elongation curve of root axis.By integrating the topological structure of rice root,the whole three-dimensional visualization model of rice root was established using GDD as driving factor,including the sub-models of the initial emergence time and location,initial extension angle,elongation rate and spatial distribution of adventitious root in rice.Finally,by integrating the sub-modules of visualization display,scene control,human-machine interface and database management on the platform of Visual C++,the three-dimensional visualization system of rice root was established,and the three-dimensional morphology of rice root under different growth conditions was simulated based on this system.These results could lay a foundation for development of visual rice growth system,and for reference to visualization studies in other crops.更多还原