A METHOD AND A DEVICE FOR MAKING IMAGES OF THE QUANTUM EFFICIENCY OF THE PHOTOSYNTHETIC SYSTEM WITH THE PURPOSE OF DETERMINING THE QUALITY OF PLANT MATERIAL AND A METHOD AND A DEVICE FOR MEASURING, CLASSIFYING AND SORTING PLANT MATERIAL

摘要

The present invention relates to a method for determining the quality of plant material by making chlorophyll fluorescence images of said material by scanning the material with a beam of electromagnetic radiation so that the chlorophyll present is excitated, and measuring the chlorophyll fluorescence with an imaging detector. From the fluorescence images obtained with a fast and a slow scan, the image of the quantum efficiency of the photosynthetic system of the plant material is calculated. The invention further relates to a device for measuring the chlorophyll fluorescence images and to a method and devices for sorting and classifying plant material.