Masmovement through gel medium.

为了最优地控制植物组织在血管中的生长，需要在凝胶培养基中保持最优的物理条件。特别是溶质和/或水在凝胶介质中的运动可以影响植物组织培养容器的生长状况。在本报告中，测量了这些运动的物理参数。研究结果总结如下：1。凝胶介质中的基质电位超过5cm(aq)，作为水运动的驱动力可以忽略不计。凝胶介质上的上覆层重量直接转化为上覆层电位，增加了介质中的水势。通过凝胶介质的导电性高度依赖于凝胶浓度，并且在正常使用的凝胶浓度周围发生显著变化。溶质在凝胶介质中的摩尔扩散系数可以认为在水中具有相同的值。分子扩散对溶质运动的影响大于质量流动对溶质运动的影响。

In order to optimumly control the growth of plant tissue in vessels, physical coditions in gel medium is re quired to be kept in optimum conditions. Especially, solute and/or water movements through gel medium could effect growth condition in plant tissue culture vessels. In this report, physical parameters for these movements are measured. The results are summarized as follows :1. Matric potential in gel medium is over-5cm(aq.)and negligible as a driving force for water movement.2. Overburden weight on gel me dium is directly changed to overburden potential and increase water potential in the medium.3. Hydraulic conductivity through gel medium depends highly on gel concentration and changes markedly around the gel concentration for normal use.4. Morechlar diffusion coeficients of solutes in gel medium can be regarded to have the same values in water.5. Solute movement by molecular diffusion is more have influencial than that by mass flow with water.