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An Unusual Stem Bending Response of Xanthium pensylvanicum to Horizontal Rotation
When a plant is rotated on a clinostat, with its axis parallel to the ground, the axis may remain straight. According to Sachs (9), the successive stimuli of gravity compensate each other and, therefore, there is no tropic reaction. Czapek (4) on the other hand, felt that under these conditions, there is no perception of the gravity by the plant and consequently no tropic reaction. In connection with an attempt to study the effect of clinostat rotation on photoperiodism, a special clinostat wasdoi:10.1104/pp.37.4.453 pmid:16655677 fatcat:izusxosqw5fsvalaexvp225dcq