Estimation of Geometric Attributes and Masses of Individual Cucumber Organs Using Three-dimensional Digitizing and Allometric Relationships
Estimation of Geometric Attributes and Masses of Individual Cucumber Organs Using Three-dimensional Digitizing and Allometric Relationships
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利用三维数字化和异速生长关系估计单个黄瓜器官的几何属性和质量
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
H. Stützel
中科院分区：
文献类型：
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作者：
K. Kahlen;H. Stützel
本研究的目的是估计黄瓜个体的几何属性和质量。原位器官。使用三维(3D)数字化技术，获得几何数据，用于建立几何器官属性和器官质量之间的异速生长关系。此外，作者还探讨了个体发育的影响和环境因素对黄瓜异速生长关系的影响。如果这种异速生长关系不存在，他们交替测试器官干重和从植株顶部向下计数的器官数量之间的关系。最后，它们包括基于生物力学方法的异速生长关系，侧重于叶片质量和叶柄属性。数字化方法为计算几何植物零件属性(如长度、面积和体积)提供了准确的数据。基于这些数据，除节间长度外，可以用异速生长函数来描述植株部分干重与植株部分几何形状之间的关系。除了这一例外，使用了两种不同类型的异速生长方程：带有两个参数的简单幂函数和没有截距的线性函数。关于所考虑的植物部件的一个以上维度(例如，面积或体积)的信息导致简单的线性关系，而仅一个维度的知识，如植物部件长度，导致更复杂的非线性关系。通常，个体发育导致标度指数或标度因子的减小，而环境的变化则分布这些值。考虑到这些影响，可以无损地确定器官尺度上的干物质分配，并研究完整植物的长期过程。
The objective of this study was to estimate geometric attributes and masses of individual cucumber (Cucumis sativus L.) organs in situ. Using three-dimensional (3D) digitizing techniques, geometric data were obtained that were used to establish allometric relationships between geometric organ attribute and organ mass. Moreover, the authors were looking for the effects of ontogeny and the influence of environmental factors on the allometric relationships in cucumber. If such an allometric relationship did not exist, they alternatively tested the relationship between organ dry weight and organ number counted from the top of the plant downward. Lastly, they included allometric relationships based on biomechanical approaches focused on lamina mass and petiole attributes. The digitizing method provided accurate data for the calculation of geometric plant part attributes, such as length, area, and volume. Based on these data it was possible to describe the relationships between plant part dry weight and plant part geometry by allometric functions except for internode length. Apart from this exception, two different kinds of allometric equations were used: a simple power function with two parameters and a linear function without intercept. Information about more than one dimension of the considered plant part (e.g., area or volume) led to a simple linear relationship, whereas knowledge of just one dimension, like plant part length, resulted in more complex nonlinear relationships. Ontogeny led, in general, to a reduction in the scaling exponent or in the scaling factor, whereas changes of the environment distributed these values. Considering these effects makes it possible to determine dry matter partitioning on organ scale nondestructively and investigate long-term processes on intact plants.