Chlorophyll fluorescence imaging technique: horticultural perspective

Chlorophyll fluorescence is a quick, non-lethal, and low-cost approach for evaluating Photosystem II activity in plants. It is denoted by Fv/Fm. The reason why it measured only PSII activity and not PSI is the fluorescence formed in PSI is constant and not variable like PSII. As PSII activity is responsive to abiotic as well as biotic factors, this approach is useful for studying photosynthetic systems and also providing a reliable benchmark of the way plants give a response to environmental variation. Though, Chlorophyll Florescence Imaging Technique is a valuable and propitious method for horticulture, it has significant shortcomings that must be addressed. Imaging of fluorescence signs, for instance, might be hampered by inflated tissues due to variances in light assimilation (e.g., curly leaves or spherical fruits), by highly reflective exteriors such as waxes or hairs, and by dust adulteration on the surface. Two leaves with different chlorophyll fluorescence release, for example, could not be compared if the light engrossed was not the same. Kautsky and Hirsch were the first to conduct experiments with the fluorescence of chlorophyll (Chl) by exposing a plant to blue light and saw it through a red filter to witness chlorophyll (Chl) fluorescence with naked eyes. This method has advanced quickly since then.