| Summary: | 碩士 === 國立宜蘭大學 === 生物機電工程學系碩士班 === 102 === Plants are subject to external stimulation, and electrical signals in them are usually generated as a result. By analyzing the electrical signals of a plant, we may have a clue to its responses to external stimuli as well as to its own growth.
This study intends to distinguish the differences of Epipremnum Pinnatum’s responses to artificial wounding and non-wounding stimuli. Electrical signals of plants were analyzed in both the time and frequency domains. In addition, the Frequency Area Ratio (FAR) on the power spectrum was calculated. We divided the power spectrum into three bands : the very low frequency (VLF, 0 ~ 0.01 Hz), low frequency (LF, 0.01 ~ 0.1 Hz) and high frequency (HF, 0.1 ~ 1 Hz).
The results show that the intensity of the plant’s responses to wounding stimuli is greater than that to non-wounding stimuli, while the conduction velocity of the plant’s responses to wounding stimuli is lower than that to non-wounding stimuli. For wounding stimuli, the value of FAR_LF is greater than that of FAR_VLF, while the opposite result was obtained for non-wounding stimuli. Therefore, plant’s electrical responses to wounding and non-wounding stimuli can be differentiated.
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