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	クロロフィル蛍光	根系の構造解析
分野	農学	農学
系統	Process / pipeline	Process / pipeline
提唱年	1931-2004	Systematic methods developed from the 1970s onward; foundational review by Lynch (1995)
提唱者	Hans Kautsky, Ulrich Schreiber, Reto J. Strasser	Multiple contributors
種類	Non-invasive photosynthetic measurement	Quantitative morphological analysis pipeline
原典	Kautsky, H., & Hirsch, A. (1931). Neue Versuche zur Klärung der Assimilationstätigkeit. Naturwissenschaften, 19(48), 964-964.	Lynch, J. (1995). Root architecture and plant productivity. Plant Physiology, 109(1), 7–13.
別名	Fluorescence, Fv/Fm, OJIP curve, PAM fluorometry	root system architecture analysis, RSA analysis, root morphology analysis, root phenotyping
関連	3	0
概要	Chlorophyll fluorescence is a non-invasive optical measurement of how efficiently the photosynthetic machinery converts absorbed light into chemical energy (photosynthesis) or heat and light (fluorescence). When photosynthesis is inhibited by stress (drought, cold, salt, pests), chlorophyll fluorescence increases because excitation energy cannot be used for photosynthesis and must be released as light or heat. Fluorescence parameters (Fv/Fm, OJIP curves) act as sensitive, rapid indicators of photosynthetic stress, enabling early detection of plant dysfunction before visible symptoms appear.	Root Architecture Analysis is a quantitative method in agronomy and plant science that characterises the spatial configuration, branching pattern, and geometric properties of a plant's root system. By measuring parameters such as total root length, lateral root density, root angle, and root tip number, researchers link below-ground structural traits to nutrient and water acquisition efficiency, soil penetration capacity, and ultimately to crop productivity and stress tolerance.