1969-Israelsson, D. and A. Johnsson - Phase Shift In Geotropical Oscillations
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Israelsson, D. and A. Johnsson. 1969. Phase-shift in Geotropic Oscillations a Theoretical and Experimental Study. Physiologia Plantarum. 22: 1226-1237.
See https://pubmed.ncbi.nlm.nih.gov/20925673/ .
The paper studies geotropical induced phase-shifts in circumnutations (turning) of Helianthus annus hypocotlys. Theory based on previous work suggest short gravitational stimulation in different phase positions of an oscillating hypocotyl. Experimental studies are performed to test the theoretical studies.
Keywords: circumnutation, plant, turning, delay, differential equation, model, oscillation, first order
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