Results 21 to 30 of about 304,325 (345)

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

Ornamental 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, Jadson Bonini Zampirollo, Marcel Merlo Mendes, Vinícius Fonseca dos Santos, João Paulo Rodrigues Martins, Diolina Moura Silva, Mônica Maria Pereira Tognella, Daniela Cassol, Antelmo Raph Falqueto   +8 more
doaj   +1 more source

Optimized RED spectral band Fluorescence of edible plants leaves extracts

Applied 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

Leaf Scattering Polarimetry and Chlorophyll Fluorescence [PDF]

, 2020
© 2019 Published by Elsevier Ltd. This is an open access article under the CC BY license. (http://creativecommons.org/licenses/by/4.0/).A number of spectropolarimetry measurements on leaves using white light and narrow band illumination have been ...
Martin, Bill
core   +2 more sources

Influence of salinity stress on PSII in barley (Hordeum vulgare L.) genotypes, probed by chlorophyll-a fluorescence

, 2021
Objectives Chlorophyll-a fluorescence is an efficient tool to determine the photosynthetic capacity of plants and the health status of plants under normal or stress conditions including salinity stress.
M. S. Akhter, S. Noreen, S. Mahmood, H. Athar, M. Ashraf, A. Alsahli, P. Ahmad   +6 more
semanticscholar   +1 more source

Quantitative imaging of chlorophyll fluorescence [PDF]

New Phytologist, 1995
summaryA computer‐controlled video system is described where images of chlorophyll fluorescence from oat (Arena saliva L.) leaves are captured throughout an induction curve. The fluorescence parameters φ11 and ΔFm/F'm which represent photosystem II photochemical efficiency and non‐photochemical quenching respectively are calculated from images taken ...
Stephen A, Rolfe, Julie D, Scholes
openaire   +2 more sources

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

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, TANG Hao, GE Wei, XIA Qian, TONG Dezhi, FU Lijiang, GUO Ya   +6 more
doaj   +1 more source

Subsurface Chlorophyll-a Maxima in the Southern Ocean

Frontiers 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, Peter G. Strutton, Peter G. Strutton, Nicole A. Hill, Philip W. Boyd   +4 more
doaj   +1 more source

Influence of alcoholic extracts from Helianthus annnus L. roots on the photosynthetic activity of Sinapis alba L. cv. Barka plants

Acta Agriculturae Scandinavica. Section B, Soil and Plant Science, 2020
Allelopathy substances stimulate or inhibit seed germination, growth and development of plant species living in their neighbouring, or occupying the same place directly after them.
Joanna Puła, Peiman Zandi, Alina Stachurska-Swakoń, Beata Barabasz-Krasny, Katarzyna Możdżeń, Yaosheng Wang   +5 more
doaj   +1 more source

Special issue in honour of Prof. Reto J. Strasser - Chlorophyll a fluorescence parameters as indicators of a particular abiotic stress in rice

Photosynthetica (Praha), 2020
The aim of this study was to evaluate the validity of some chlorophyll (Chl) a fluorescence parameters as early indicators of a particular abiotic stress and also to characterize the effect of different abiotic stresses [high light, NaCl, polyethylene ...
P. Faseela, A. K. Sinisha, M. Brestič, J. T. Puthur   +3 more
semanticscholar   +1 more source

Early-Stage Detection of Biotic and Abiotic Stress on Plants by Chlorophyll Fluorescence Imaging Analysis

Biosensors, 2023
Most agricultural land, as a result of climate change, experiences severe stress that significantly reduces agricultural yields. Crop sensing by imaging techniques allows early-stage detection of biotic or abiotic stress to avoid damage and significant ...
Julietta Moustaka, Michael Moustakas
semanticscholar   +1 more source