Abstract
This paper reports the characteristics of daily variations of water content of several crops and trees, that is, plant water dynamics under natural conditions. They were obtained by the measurements as the application of our non-invasive and continuous measurements of water content in plant. Those methods were reported in previous report (No. 1) .
The main results obtained through the measurements were as follows.
(1) Daily variations of plant stem diameter as the index of water content under various weathers
(2) Relationship between stem diameter and water potential in plant tissue.
(3) Relationship between the daily variations of stem diameter and stomatal aperture of a plant.
(4) Transient responses of the water content in a plant to the watering.
(5) Plant stem shrinkage according to the drought of soil.
(6) Oscillation in stem diameter observed in its daily variation.
