Astashev Maxim E, Konchekov Evgeny M, Kolik Leonid V, Gudkov Sergey V
Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia.
Sensors (Basel). 2022 Oct 29;22(21):8310. doi: 10.3390/s22218310.
Electric impedance spectroscopy is an alternative technology to existing methods that shows promising results in the agro-food industry and plant physiology research. For example, this technology makes it possible to monitor the condition of plants, even in the early stages of development, and to control the quality of finished products. However, the use of electric impedance spectroscopy is often associated with the need to organize special laboratory conditions for measurements. Our aim is to extract information about the state of health of the internal tissues of a plant's branches from impedance measurements. Therefore, we propose a new technique using the device and model developed by us that makes it possible to monitor the condition of tree branch tissues in situ. An apple tree was chosen as the object under study, and the dependence of the impedance of the apple tree branch on the signal frequency and branch length was analyzed. The change in the impedance of an apple tree branch during drying was also analyzed. It was shown that, when a branch dries out, the conductivity of the xylem mainly decreases. The developed technique was also applied to determine the development of the vascular system of an apple tree after grafting. It was shown that the processing of the scion and rootstock sections with the help of cold atmospheric plasma and a plasma-treated solution contributes to a better formation of graft unions.
电阻抗光谱法是一种替代现有方法的技术，在农业食品工业和植物生理学研究中显示出有前景的结果。例如，这项技术能够监测植物的状况，即使在发育的早期阶段，还能控制成品的质量。然而，电阻抗光谱法的使用通常与需要为测量组织特殊的实验室条件相关联。我们的目标是从阻抗测量中提取有关植物枝条内部组织健康状况的信息。因此，我们提出了一种使用我们开发的设备和模型的新技术，该技术能够原位监测树枝组织的状况。选择一棵苹果树作为研究对象，分析了苹果树枝条的阻抗对信号频率和枝条长度的依赖性。还分析了苹果树枝条在干燥过程中阻抗的变化。结果表明，当枝条干燥时，木质部的电导率主要降低。所开发的技术还用于确定嫁接后苹果树维管系统的发育情况。结果表明，借助冷大气等离子体和等离子体处理溶液对接穗和砧木部分进行处理有助于更好地形成嫁接结合部。
