Abstract
The elongation of primary roots of pedunculated oak (Quercus robur L.), which is associated with nutation oscillations, was registered by a time lapse cinematography. The following characteristics were expressed graphically: relative growth rate [mm h-1], frequency [rev. h-1] and amplitudes [mm] of nutation oscillations, their direction and location of nutation curvatures. The growth-oscillation mechanism is interpreted as a part of the geocontrol system of the root and was evaluated on the basis of its physiological efficiency. Comparison of nutation periods showed that the control system of pedunculated oak is three times more and two times less efficient than that of pea and maize, respectively. Comparison of the oscillation amplitudes of growing roots gives similar results.
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Spurný, M., Koutná, R., Čížková, R. et al. Growth and nutation parameters of primary root of pedunculated oak (Quercus robur L.). Biol Plant 20, 167–172 (1978). https://doi.org/10.1007/BF02923619
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DOI: https://doi.org/10.1007/BF02923619