Authors

Abstract

During the growth and development of tomato plants, its different cells or tissues would store external environmental information and express it in the form of ion transportation. In order to better examine the storage model of tomato plants, the tomato individual tissue and whole plant biological circuit models were closely examined based on the idea of modal theory. According to the parameter inversion theory, in the frequency range of 0.1Hz - 1MHz, the impedance spectrum measurement and dielectric properties of tomato plants in four modal periods of germination stage were carried out. The stages were namely the seedling stage, flowering and fruit setting stage, and fruiting stage respectively. Impedance spectrum fitting was performed with the ZSimpWin software. Then, the biological circuit model of each tissue of tomato plant was obtained. Next, the parameter inversion was used to calculate the value of each element of the biological circuit model. Lastly, the biological circuit model of the tomato plant body in each period was obtained. Through the charging and discharging test of the model of the tomato plant body at each stage, the corresponding parameter value relationship was obtained according to the capacitance characteristics. This would be compared with the component values obtained from the parameter inversion in the model. Results showed that the errors were all less than 4.8%, which verified the rationality of the model. This system acted as a theoretical guidance for the research on the growth and development of tomato and other plants.

Abstract in Chinese

在番茄植株生长发育过程中，不同细胞或组织会对外部环境信息进行储存，并通过离子运输的形式进行表达。为了更好的研究番茄植株的储存模型，用模态理论的思想对番茄个体组织和整体植株生物电路模型进行研究。基于参数反演理论，在 0.1Hz-1MHz 频率范围内，针对发芽期、幼苗期、开花坐果期、结果期四个模态周期的番茄植株进行阻抗谱测量以及介电特性研究，通过 Zsimpwin 软件进行阻抗谱拟合，得出番茄植株各组织生物电路模型，并利用参数反演计算生物电路模型的各元件值，最终得出各时期番茄植株体的生物电路模型。通过对番茄植株体各时期的模型进行充放电试验，根据电容特性得出相应的参数值关系，与模型中参数反演出的元件值对比验证，其误差均小于4.8%，验证了模型的合理性。本系统为番茄及其他植株生长发育研究提供理论指导。