Abstract
IN our pilot studies concerning the effect of space environments on the circadian leaf movements, we have devised a small lightweight leaf movement recording system using a strain gauge coupled to an amplifier and a recorder. The need for such a system was dictated by the physical limitations of an orbiting capsule. We have also found that such a system is useful for earthbound experiments. The small size of the sensing unit makes it possible to place several units on a single plant. The monitored plant can easily be placed in a small control chamber and continuous records of several weeks' duration can be obtained when the movements are recorded on a strip chart recorder.
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HOSHIZAKI, T., YOKAYAMA, K. Recording Leaf Movements with a Strain Gauge. Nature 207, 880–881 (1965). https://doi.org/10.1038/207880a0
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DOI: https://doi.org/10.1038/207880a0
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