Results 11 to 20 of about 304,325 (345)

Chlorophyll fluorescence—a practical guide [PDF]

open access: yesJournal of Experimental Botany, 2000
Chlorophyll fluorescence analysis has become one of the most powerful and widely used techniques available to plant physiologists and ecophysiologists. This review aims to provide an introduction for the novice into the methodology and applications of chlorophyll fluorescence. After a brief introduction into the theoretical background of the technique,
Giles N Johnson
exaly   +7 more sources

Fresh perspectives on an established technique: Pulsed amplitude modulation chlorophyll a fluorescence [PDF]

open access: yesPlant-Environment Interactions, 2022
Pulsed amplitude modulation (PAM) chlorophyll a fluorescence provides information about photosynthetic energy transduction. When reliably measured, chlorophyll a fluorescence provides detailed information about critical in vivo photosynthetic processes ...
Guanqiang Zuo   +6 more
doaj   +2 more sources

High throughput analysis of leaf chlorophyll content in sorghum using RGB, hyperspectral, and fluorescence imaging and sensor fusion

open access: yesPlant Methods, 2022
Background Leaf chlorophyll content plays an important role in indicating plant stresses and nutrient status. Traditional approaches for the quantification of chlorophyll content mainly include acetone ethanol extraction, spectrophotometry and high ...
Huichun Zhang   +5 more
doaj   +2 more sources

Vertical distribution of chlorophyll a concentration and phytoplankton community composition from in situ fluorescence profiles: a first database for the global ocean [PDF]

open access: yesEarth System Science Data, 2015
In vivo chlorophyll a fluorescence is a proxy of chlorophyll a concentration, and is one of the most frequently measured biogeochemical properties in the ocean.
R. Sauzède   +7 more
doaj   +2 more sources

Determination of rice (Oryza sativa L.) drought stress levels based on chlorophyll a fluorescence through independent component analysis [PDF]

open access: yesPhotosynthetica
Sensing rice drought stress is crucial for agriculture, and chlorophyll a fluorescence (ChlF) is often used. However, existing techniques usually rely on defined feature points on the OJIP induction curve, which ignores the rich physiological information
Q. XIA   +4 more
doaj   +2 more sources

Instrumentation in Developing Chlorophyll Fluorescence Biosensing: A Review

open access: yesSensors, 2012
Chlorophyll fluorescence can be defined as the red and far-red light emitted by photosynthetic tissue when it is excited by a light source. This is an important phenomenon which permits investigators to obtain important information about the state of ...
Jesus R. Millan-Almaraz   +6 more
doaj   +3 more sources

Modulations in Chlorophyll a Fluorescence Based on Intensity and Spectral Variations of Light. [PDF]

open access: yesInt J Mol Sci, 2022
Photosynthetic efficiency is significantly affected by both qualitative and quantitative changes during light exposure. The properties of light have a profound effect on electron transport and energy absorption in photochemical reactions.
Janeeshma E   +8 more
europepmc   +2 more sources

Interactive effect of potassium and cadmium on growth, root morphology and chlorophyll a fluorescence in tomato plant. [PDF]

open access: yesSci Rep, 2021
A hydroponic experiment was conducted to evaluate the role of potassium (K) in tomato plant growth exposed to cadmium (Cd) stress. In this work, the effects of three potassium nutrition regimes (155, 232 and 310 ppm of K) combined with Cd at different ...
Naciri R   +4 more
europepmc   +2 more sources

Imaging of Chlorophyll a Fluorescence in Natural Compound-Induced Stress Detection. [PDF]

open access: yesFront Plant Sci, 2020
Imaging of chlorophyll a fluorescence (CFI) represents an easy, precise, fast and non-invasive technique that can be successfully used for discriminating plant response to phytotoxic stress with reproducible results and without damaging the plants.
Sánchez-Moreiras AM   +3 more
europepmc   +2 more sources

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