Abstract
In order to develop the environmental control system based on plant responses, the bioelectric potential transition patterns on Spinach lamina in response to light-on were measured as an useful plant physiological information.
The obtained results are summarized as follows;
1) This Bioelectric potential transition patterns when light on were changed by air temperature, relative humidity, CO2concentration, light intensity, plant growth and dying process.
2) One specific peak of this pattern was related with the rate of photosynthesis.
3) This peak related with photosynthesis was similar to photoelectric potential pattern on spinach chlorophyll in response to CO2concentration.
4) A vibration of the bioelectric potential appeared in photoperiod, and the ampritude and cycle time of this vibration were increased by decrease of CO2concentration or increase of light intensity.
5) Therefore, it is possible to hypothesize that the bioelectric potential on lamina is superposition of bioelectric potentials on chlorophyll due to the photosynthesis and respiration.
