Determination of Specific Growth Stages of Plant Cell Suspension Cultures by Monitoring Conductivity Changes in the Medium 

 -  Planta, 118(1), p.75-841974, 1974 .
<br/><br/> Conductivity changes in the medium of cultured soybean (Glycine max L.)cells were shown to be strictly correlated with nitrate uptake and growth of the cultures. A continuous record of the conductivity was used as a simple and reliable method of determining specific growth stages and concomitant peaks in the activities of nitrate reductase and phenylalanine ammonia-lyase.