ABSTRACT

In vivo measurements of the optical properties of plant leaves, by spectrophotometric methods, could potentially provide very useful information for the assessment of the plant’s health. This paper describes a novel experimental set-up that enables continuous measurements of the optical reflection and transmission coefficients of broad-leaved plants. The optical spectral characteristics of leaves, in the broad wavelength range, are often a discussed topic in the scientific literature. Nevertheless, to the best of our knowledge, the real-time spectral analyses of the leaf haven’t been reported so far. Monitoring the evolution of the plant activity in real-time has resulted in the graph of the spectral Circadian rhythm as a function of time. The set-up was tested on Phaseolus vulgaris and the results of the measurements are presented and discussed.

摘要

通过分光光度法对植物叶片的光学特性进行体内测量，可能为评估植物的健康状况提供非常有用的信息。本文介绍了一种新颖的实验装置，该装置能够连续测量阔叶植物的光反射和透射系数。叶子在宽波长范围内的光谱特性通常是科学文献中讨论的话题。尽管如此，据我们所知，目前还没有关于叶片的实时光谱分析的报道。实时监测植物活动的演变导致光谱昼夜节律图作为时间的函数。该设置在菜豆上进行了测试 并对测量结果进行了介绍和讨论。