植物木质部压力探针测定技术与方法  

Techniques and Methods for the Practical Use of Xylem Pressure Probes

作　　者：柏新富[1] 朱建军[1] 

机构地区：[1]鲁东大学生命科学学院,山东烟台264025

出　　处：《植物科学学报》2013年第6期603-608,共6页Plant Science Journal

基　　金：山东省高等学校科技计划项目(J09LC06)

摘　　要：木质部压力探针技术是目前直接测定植物木质部导管负压的唯一手段。在结构上,木质部压力探针测定系统由精密操作装置、压力探针系统和信号采集-传输-显示系统三大部分组成。其测定原理是将毛细管探针刺入木质部导管,通过传导介质将木质部导管负压传至压力传感器,压力传感器感应压力并将压力信号输出。本文从玻璃毛细管探针的制作、去气泡水的制备以及压力探针的校准、安装、测定等方面详细介绍了木质部压力探针的使用方法和注意事项。Xylem pressure probes are the only technique used currently to measure plant xylem pressure directly. This technique includes devices for accurate positioning, pressure probe systems and signal acquisition. Negative pressure of the xylem vessels is transmitted to the pressure sensor by conduction medium when the capillary probe punctures the xylem vessels, with the pressure then detected and transmitted to the data acquisition system. In this paper, the use and precautions of xylem the preparation of glass capillary probes, and measurement of pressure probes.

关 键 词：木质部 压力探针 结构组成 测定方法 

分 类 号：Q945[生物学—植物学]