Remote monitoring tschnique of plant activity using laser-induced fluorescence lifetime measrement method

为了更好地了解植物的生理活动，我们研制了一套激光诱导荧光寿命（LIFL）监测系统。利用该系统对几种植物叶片的荧光寿命进行了测量。水分胁迫下红罗宾叶片的荧光寿命比对照叶片有所延长。对照和盐胁迫下生菜叶片寿命无差异。悬铃木叶片的荧光寿命在阳光充足的地方比在阴暗的地方长，在13：00太阳辐射高的时候荧光寿命最短，实验结果证实植物叶片的荧光寿命是了解植物生理活动的一个很好的指标，所研制的LIFL监测系统是一种很好的监测植物生理活动的仪器。

We have developed a laser-induced fluorescence lifetime (LIFL) monitoring system for getting better understandings of plant's physiological activity. Using this system, fluorescence lifetime measurement of several plant leaves was made. Leaves of RedRobin grown in water-stress condition showed that the fluorescence lifetime was lengthen comparing with that of control leaves. There was no difference of lifetime between lettuce leaves grown in control and salt stress condition. Fluorescence lifetime of plane tree leaves at sunny place was longer than that at shade place, and the lifetime was minimum at 13:00 when the solar radiation was high.Experiment results confirmed that fluorescence lifetime of plant leaves was a good index to understand plant's physiological activity, and the developed LIFL monitoring system was a powerful apparatus for this purpose.