Growth and nutation parameters of primary root of pedunculated oak (Quercus robur L.) |
| |
Authors: | M Spurný Radomíra Koutná Radmila Čížková Dana Konečná |
| |
Institution: | 1. Institute of Botany of the Czechoslovak Academy of Sciences, Department of Forest Biology, Po?í?í 3b, 603 00, Brno, Czechoslovakia
|
| |
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. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|