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Confocal Fluorescence Lifetime Imaging of Chlorophyll Molecules in Polymer Matrices

Photochemistry and Photobiology, 1996
Abstract—Confocal fluorescence lifetime imaging has been used to establish the microscopic disposition of chlorophyll molecules in polymer matrices. This study provides a direct test of models proposed on the basis of fluorescence measurements on bulk Alms. We show that whereas chlorophyllbmolecules are uniformly distributed in nitrocellulose matrices,
Sanders, R.   +4 more
openaire   +2 more sources

Rosis - An Imaging Spectrometer For Rejiote Sensing Of Chlorophyll Fluorescence

SPIE Proceedings, 1989
The "Reflective Optics System Imaging Spectrometer" (ROSIS) is a compact, programmable imaging spetrometer based on a CCD matrix detector array. The instrument has been designed specifically for the monitoring of water color and of natural chlorophyll fluorescence in order to quantitatively derive pigments, suspended matter and yellow substance ...
Roland Doerffer   +2 more
openaire   +1 more source

Fluorescence Imaging of Photosynthetic Activity in Stressed Plants Via Chlorophyll Fluorescence

1998
Various stressors such as ozone and highly reactive oxygen species (1O2, O2-, OH, H2O2), air pollution gases (sulfur dioxide, NOX etc.), drought, heat and high-light stress as well as increased levels of UV-radiation will affect the chemical and pigment composition of leaves, their photosynthetic performance and modify their optical and fluorescence ...
Wenzel, Oliver   +1 more
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Image Instrumentation of Chlorophyll a Fluorescence for Diagnosing Photosynthetic Injury

2002
Environmental stress factors such as air pollutants, agricultural chemicals, water deficit, chilling, and UV light can affect the health of plants (Larcher 1995; Kramer and Boyer 1995; Yunus and Iqbal 1996; De Kok and Stulen 1998). The first symptoms to appear are decreases in photosynthesis and growth.
Kenji Omasa, Kotaro Takayama
openaire   +1 more source

Visualizing photosynthesis through processing of chlorophyll fluorescence images

SPIE Proceedings, 1990
Measurements of terrestrial plant photosynthesis frequently exploit sensing of gas exchange from leaves enclosed in gas-tight, climate controlled chambers. These methods are typically slow, and do not resolve variation in photosynthesis below the whole leaf level.
Paul F. Daley   +4 more
openaire   +1 more source

Chlorophyll Fluorescence Imaging of Heavy Metal Treated Plants

1998
Chlorophyll fluorescence has been widely applied as a powerful non-invasive technique for in vivo analysis of plant stress (1,2). In vivo heavy metal stress has also been studied by means of chlorophyll fluorescence (3). In the last years a new approach, the two-dimensional image analysis of the fluorescence signal, has been found very promising.
Massimo Ciscato, Roland Valcke
openaire   +1 more source

Plant phenotyping using chlorophyll fluorescence and multispectral imaging

2022
High-throughput phenotyping methodologies such as chlorophyll fluorescence and multispectral imaging represent tools for non-invasive quantification of plant performance in different environments. These techniques are widely used, from basic ecophysiological studies to applied research in crop breeding programs.
openaire   +1 more source

Crop chlorophyll detection based on multiexcitation fluorescence imaging analysis

Biosystems Engineering, 2022
Guohui Liu   +8 more
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IMAGE ANALYSIS OF CHLOROPHYLL FLUORESCENCE IN LEAVES

1990
Kenji Omasa, Ken-ichiro Shimazaki
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A low cost harmonically modulated chlorophyll fluorescence imaging system and frequency domain analysis of chlorophyll fluorescence

2021 IEEE International Workshop on Metrology for Agriculture and Forestry (MetroAgriFor), 2021
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