Chlorophyll fluorescence imaging as a plant diagnosis tool in protected horticulture

Abstract

In spite of the usefulness of chlorophyll fluorescence imaging as a tool to obtain plant physiological information from intact plant without contact, the use of the chlorophyll fluo-rescence imaging as a plant diagnosis technique is not active in protected horticulture. In order to apply this technique to monitor plant status under practical conditions of protected horticulture, some appropriate modifications of commercially available chlorophyll fluorescence measurement instruments and/or formulation of own measurement protocols that suit for the research objectives should be done. To do them, fundamental knowledge of chlorophyll fluorescence and its measurement is indispensable. Here, we firstly explain the basics of chlorophyll fluorescence and its measurement, then introduce two examples of plant diagnosis with chlorophyll fluorescence imaging.