Results 11 to 20 of about 114,766,000 (249)

Estimation of Chlorophyll Fluorescence at Different Scales: A Review

open access: yesSensors, 2019
Measuring chlorophyll fluorescence is a direct and non-destructive way to monitor vegetation. In this paper, the fluorescence retrieval methods from multiple scales, ranging from near the ground to the use of space-borne sensors, are analyzed and ...
Hongyuan Huo, Qifeng Lu
exaly   +3 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 ...
Carlos Duarte-Galvan   +2 more
exaly   +3 more sources

Postharvest investigations into chlorophyll fluorescence and low temperature injury in cut roses (Rosa hybrida L.) [PDF]

open access: yes, 2005
This is one of the first studies on the relationship between pre-harvest environmental conditions found in the Mediterranean and postharvest characteristics of cut roses (Rosa hybrida L. ).
Pompodakis, Nektarios E.
core   +7 more sources

Exposition of three Cattleya species (Orchidaceae) to full sunlight: effect on their physiological plasticity and response to changes in light conditions

open access: yesOrnamental Horticulture, 2023
In order to establish a link between the evolutionary history and the photochemical attributes, measurements of chlorophyll (Chl) a fluorescence were made in Cattleya warneri, C. shofieldiana and C. harrisoniana exposed to high irradiance for 5, 35, and
Clodoaldo Leites Pinheiro   +8 more
doaj   +1 more source

Optimized RED spectral band Fluorescence of edible plants leaves extracts

open access: yesApplied Surface Science Advances, 2023
Chlorophyll pigments in Ethanol solvent were extracted from 20 edible plants leaves to allocate optimized fluorescence domains for bio-spectral applications.
S.A. Popescu, A. Peled
doaj   +1 more source

Hydrogen peroxide reduces sensitivity to aluminum in canola?

open access: yesActa Agronómica, 2022
The objective of this study was to evaluate the effect of aluminum and the mitigating potential of H2O2 on the stress and antioxidant responses in canola (Brassica napus var. oleifera (Moench) Delile) affecting the emergence and initial growth of plants.
Silvana de Paula Quintão Scalon
doaj   +1 more source

Subsurface Chlorophyll-a Maxima in the Southern Ocean

open access: yesFrontiers in Marine Science, 2020
Our review of the literature has revealed Southern Ocean subsurface chlorophyll-a maxima (SCMs) to be an annually recurrent feature throughout the basin. Most of these SCMs are different to the “typical” SCMs observed in the tropics, which are maintained
Kimberlee Baldry   +4 more
doaj   +1 more source

Low-Cost Chlorophyll Fluorescence Imaging System Applied in Plant Physiology Status Detection

open access: yes智慧农业, 2023
ObjectiveChlorophyll fluorescence (ChlF) emission from photosystem II (PSII) is closely coupled with photochemical reactions. As an efficient and non-destructive means of obtaining plant photosynthesis efficiency and physiological state information, the ...
YANG Zhenyu   +6 more
doaj   +1 more source

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