抄録
The stress waves at frequency of 5 kHz through the stem of the miniature tomato were transmitted and received to investigate the potential to evaluate the development of vascular tissue of tomato stem by vibration measurement. Two waves were detected and extracted using AE sensor. The wave velocities and the influence of holding a stem on the wave propagation indicated that the detected waves might be the longitudinal and flexural modes. The velocity of detected waves showed strong correlation with the thickness of a vascular tissue rather than a stem diameter. Furthermore, the velocity of the slow wave showed good correlation (correlation coefficient was 0.82) with the parameter calculated from the thickness of a vascular tissue and the stem diameter.
