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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 87 for “"Chlorophyll Fluorescence"”.
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Regulation of Chlorophyll Fluorescence During Photosynthesis: A Study Ofthe Factors Affecting Changes in Yield and Emission of Chlorophyll Fluorescence in Intact Algal Cells and Isolated Chloroplasts
Made available in DSpace on 2015-05-14T14:57:40Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7317332.PDF: 11760642 bytes, checksum: 8015562be0d92abb6bdfb3b41503fe60 (MD5) Previous issue date: 1972
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Analysis of chlorophyll fluorescence in marine phytoplankton : interpretation of flow cytometric signals
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1988.
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A novel low- cost chlorophyll fluorescence Sensor for early detection of environmental pollution
… to alterations in plant physiology, specifically chlorophyll content and photosynthetic efficiency. Measuring plant efficiency, thus health, using commercial fluorometers, such as PAM (pulse-amplitude modulation) devices, presents a challenge, since cost, complexity and the measurement methods …
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Applications of Chlorophyll Fluorescence Transient Measurements to the Functional Analysis of Photosynthetic Processes
Made available in DSpace on 2015-05-14T15:10:01Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7915384.PDF: 3245502 bytes, checksum: ad1c321b2bf4fc85a7d3d49ee6f26240 (MD5) Previous issue date: 1979
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Evaluation of the Chlorophyll/Fluorescence Sensor of the YSI Multiprobe: Comparison to an Acetone Extraction Procedure
… extraction procedure and the multiprobe chlorophyll/fluorescence readings was examined. Preliminary studies involved determining the best method for disrupting algal cells prior to analysis and examining the precision and linearity of the acetone extraction procedure. Cell disruption by …
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Heterogeneity of Leaf-Level Photosynthesis as Seen Through the Lens of Ozone, Soybean, and Chlorophyll Fluorescence Imaging
… and analyze this heterogeneity. Modulated chlorophyll a fluorescence imaging (CFI) coupled with gas exchange was used to test the hypothesis that O 3 induces differential leaf-level spatial effects on photosynthesis in soybean depending on its exposure regime (acute vs. chronic). Spatial …
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Solar-induced chlorophyll fluorescence (SIF) as a proxy of canopy photosynthesis for crops in the U.S. corn belt
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
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Utilising Chlorophyll Fluorescence to Assess the Variability of Phytoplankton Biomass and Productivity in the North-West European Shelf Seas
… of the strengths and limitations of the use of fluorescence-based measurements.
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Genetic variation of heat tolerance and correlation with other agronomic traits in a maize (Zea mays L.) recombinant inbred line population
… determine the genetic variation of leaf firing, chlorophyll fluorescence, plant height, ear height, leaves above ear, number of tassel branches, days to flowering and yield per plant in a recombinant inbred line population, and to estimate the heritability of those traits. A total of 179 maize …
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Thermo and drought tolerance markers and regulation of heat stress proteins for chickpea (Cicer arietinum L.; Fabaceae) production in NE South Africa
… gradient in the field was assessed using chlorophyll fluorescence, non-structural carbohydrate, gas exchange and grain yield. Field experiments were carried out in two winter seasons at three locations with known differences in temperature in NE South Africa. Results showed two genotypes …
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Understanding the Interaction of Mesotrione and Atrazine in Redroot Pigweed (Amaranthus Retroflexus)
… at the whole-plant level as well as through chlorophyll fluorescence measurements, demonstrating a negative cross-resistance to the HPPD inhibitor mesotrione. While atrazine directly inhibits photosynthesis at photosystem II (PSII), mesotrione leads to the depletion of plastoquinone, a …
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Measuring the Physiological Effects of Methylobacterium oryzae Foliar Inoculation onto Salt-Stressed Tomatoes grown in a Greenhouse Semi-Hydroponic System
… and inoculation with <em>M. oryzae </em>impacted chlorophyll fluorescence, leaf-gas exchange parameters, and tomato Brix levels. Salinity did not alter per unit chlorophyll fluorescence parameters, net carbon assimilation, or fruit Brix levels but did decrease stomatal conductance and fruit yield. …
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Eastern Hemlock Needle Physiology as Impacted by Hemlock Wooly Adelgid and Treatment with Imidacloprid
… gas exchange system (LI-COR Inc, Lincoln NE). Chlorophyll fluorescence and bud break were also characterized for all trees at two of the three sites. After one complete growing season, we found a slight increase in photosynthetic rates (4.98 %), increased bud break at Fishburn (562 %) and …
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Heterogeneity of photosystem II as it occurs in domain specific regions of the thylakoid membrane of spinach (spinacia oleracia L.)
… sizes of the functional PSII antenna and the fluorescence induction kinetics were measured and used to determine the relative contributions of PSlla and PSII~ to each fraction. Picosecond chlorophyll fluorescence decay kinetics were collected for each fraction to characterize and gain insight …
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Using low cost components to determine chlorophyll concentration by measuring fluorescence intensity
… the core of this fluorometer's functionality, chlorophyll's fluorescence characteristics and origins are discussed. Special attention is given to the variability of chlorophyll fluorescence as it has a big influence on measurements. Experimental procedures and data are provided to show why each …
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Development of diagnostic tools to predict incidence of bitter pit during apple storage
… also a non-destructive monitoring method by chlorophyll fluorescence at the point of harvest and monitoring during storage for developing more reliable prediction models to improve storage management. The role of free and conjugated calcium in maintaining cellular integrity and the …
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Metabolic bases for the differential response of 'Kwangkyo' and 'Hood' soybean (Glycine max (L.) Merr) to the herbicide paraquat
… well as by measurements of desiccation ratings, chlorophyll content, and chlorophyll fluorescence tracings of fully expanded first trifoliolate leaves of these two cultivars after exposure to a wide range of paraquat concentrations. The margin of this intraspecific differential tolerance to …
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Shrubs as Sentinels of Ordnance Contamination: Using Plant Physiology and Remote Sensing to Detect TNT in Soils
… data, such as hyperspectral reflectance and chlorophyll fluorescence, and traditional plant-level physiological data. In accordance with the hypothesis, low levels of TNT improved physiological response in plants due to the slight increase in nitrogen, while high levels of TNT induced stress. …
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Physiological and Metabolic Responses to Water-deficit and Heat Stress of Virginia-type Peanut Cultivars and Breeding Lines
… d 0.05) variations for yield, membrane injury, chlorophyll fluorescence (Fv/Fm ratio), specific leaf area, SPAD chlorophyll content, and relative levels of polar and non-polar metabolites were observed in response to water regime, growth stage, and genotype in both years during the field …
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