Abstract
Air currents in plant tissue culture vessels were visualized using fine particles of metaldehyde ( (C2H4O) 4) as tracers. Movement of the tracers was monitored with a video camera. The video image was analyzed to determine patterns and speeds of the air currents. An upward air current with an air current speed of 12 mm s-1 was observed in the central region and downward air currents with an air current speed of 7 mm s-1 was observed along the inside walls in a Magenta-type polycarbonate vessel (370 mL in volume) with a 10-mm-tall potato plantlet. It was proved that air currents were retarded in plant tissue culture vessels.
