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The possibility of using the period of free vibrations to determineelastic modulus and flexural rigidity of plant material withcontrasting elasticity to viscosity ratios was tested. A simple,easy-to-operate method is described. Both the mature sectionsof Triticale peduncle as well as those sampled from the meristematiczone were found to behave like a lightly damped linear oscillator,providing that the excitements were of a very small amplitude.Elastic modulus calculated from the period of free vibrationsfor the meristematic zone was consistent with most data reportedin the literature for other growing tissues investigated bythe resonance technique. A high gradient of elastic modulus,from 33 MPa to 2·89 GPa per 8 cm was found within thezone of differentiation and development of strengthening tissues.The applicability of the free vibration technique to study plantrigidity as compared to other methods is discussed. Key words: Triticosecale, free vibrations, peduncle, stiffness measurement, Young's modulus 相似文献
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