fluorescence of chlorophyll a
The chlorophyll a fluorescence as an indicator of the temperature stress in the leaves of Prunus persica
... one of the metabolic processes most sensitive to high temperature stress, and it is often inhibited before other cellular ...transient chlorophyll a fluorescence along with the gas exchanges at ...
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VARIAÇÕES DIURNAS DA FLUORESCÊNCIA DA CLOROFILA A EM MUDAS DE PAU D'ALHO
... Analysis of transient and modulated fluorescence of chlorophyll a were made at one-hour intervals during an eight-hour period starting at 07:30h aiming to study mechanisms of ...
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Características fisiológicas e anatômicas de folhas de dois clones de guaraná
... objective of this work was to analyze gas exchange, photosynthetic characteristics, photochemical efficiency of photosystem II and anatomical characteristics of young plant leaves of two ...
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Assessment of in vivo fluorescence method for chlorophyll-a estimation in optically complex waters (Curuai floodplain, Pará – Brazil)
... the fluorescence properties of molecules that can be simply described as the ability of a given material to emit photons in longer wavelengths when stimulated at shorter ones (Suggett et ...The ...
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Chlorophyll fluorescence image analysis for non-destructive monitoring of physiological changes in fresh and fresh-cut prouce
... the fluorescence signal changes in a characteristic pattern, the so-called Kautsky-curve (von Willert et ...the fluorescence peak F p reflects a complex series of reactions including primary charge ...
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CONCENTRATION OF PHOTOSYNTHETIC PIGMENTS AND CHLOROPHYLL FLUORESCENCE OF MAHOGANY AND TONKA BEAN UNDER TWO LIGHT ENVIRONMENTS
... Leaf chlorophyll concentrations (Chl a, Chl b, Chl tot) on a fresh mass basis were higher in shade leaves than in sun leaves, for both species (Table ...reactions. Chlorophyll is synthesized and degraded ...
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Seasonal variability of phytoplankton fluorescence in relation to the Straits of Messina (Sicily) tidal upwelling
... development of phytoplankton biomass on the world’s oceans and ...layer of the water column and modulates the chlorophyll−a distribu- tion (Koike et ...levels of the trophic chain. Low water ...
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SENSITIVITY TO ENVIRONMENTAL STRESS OF PRATA, JAPIRA AND VITÓRIA BANANA CULTIVARS PROVEN BY CHLOROPHYLL a FLUORESCENCE
... effect of several individual parameters, that is, the density of active reaction centers, the quantum efficiency performance of PSII, the conversion of energy to the transport of ...
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Chlorophyll fluorescence in the evaluation of photosynthetic electron transport chain inhibitors in the pea
... Analysis of Chl a fluorescence emission, makes it possible to evaluate this process in terms of energy flow (STRASSER; TSIMILLI-MICHAEL; SRIVASTAVA, 2004), in which the fluorescence transient ...
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Evaluation of Chlorophyll Fluorescence and Biochemical Traits of Lettuce under Drought Stress and Super Absorbent or Bentonite Application
... activity of antioxidant enzymes (Oman et al., 2005). Hence the ability of these enzymes can be used as a marker for selection of drought-tolerant varieties of sunflower ...
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Chilling tolerance in Zizania latifolia
... series of physiological and biochemical functions (Sun et ...accumulation of matter (Crafts-Brander et al., 1990). Indeed, the effects of low temperatures on plant physiology and especially the ...
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Structural and Ecophysiological Alterations of the Water Hyacinth [Eichhornia crassipes (Mart.) Solms] Due to Anthropogenic Stress in Brazilian Rivers
... a fluorescence parameters were determined between 9:30 ...s of high intensity (10 000 µmol m -2 s -1 ) actinic white ...following chlorophyll a fluorescence emission parameters were recorded: ...
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Photochemical efficiency in cladodes of ‘Gigante’ cactus pear cultivated under different spacings and organic fertilization
... a fluorescence has allowed inferences on the efficiency of the photochemical phase of photosynthesis and can be useful in studies on the physiological behavior of CAM plants (Romo-Campos et ...
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Leaf gas exchange and chlorophyll a fluorescence imaging of soybean leaves Infected with Colletotrichum truncatum
... strips of filter paper placed into glass tubes containing silica gel at ...Pieces of filter paper with fungal mycelia were transferred to Petri dishes containing potato-dextrose-agar ...leaves of a ...
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USE OF CHLROPHYLL FLUORESCENCE SORTING TO IMPROVE SOYBEAN SEED QUALITY
... The chlorophyll fluorescence signals of the non-sorted seeds (control) and sorted seeds (low and high chlorophyll fluorescence) for each seed sample are reported in Table ...values ...
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Physiological performance of Hancornia speciosa Gomes seedlings under different watering conditions: growth and chlorophyll a fluorescence
... aim of the present study was to evaluate initial growth, chlorophyll content and chlorophyll a fluorescence in mangaba seedlings under different watering conditions (daily irrigation and ...
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Improvement of Photosynthesis by Sub1 QTL in Rice Under Submergence: Probed by Chlorophyll Fluorescence OJIP Transients
... vagues of Fo, Fm and Fv/Fm ratio (Panda et ag., 2008). Damage of photosynthetic apparatus and impair of photosynthesis wougd then be attributed to decrease of gight intensity and sub-optimag ...
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Comparative stomatal conductance and chlorophyll a fluorescence in leaves vs. fruits of the cerrado legume tree,
... rates of illuminated fruits were lower than those of fruits in darkness, indicating that they fix CO 2 , but the dark respiration was not fully compensated by light fixation in most fruit pods (Pavel and De ...
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Ecophysiological adaptation and metal accumulation in water hyacinth from two tropical rivers
... adaptations of water hyacinth (metal hyperaccumulator) under adverse environmental conditions are not yet clearly ...and chlorophyll a fluorescence in water hyacinth plants sampled in different ...
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Modulated Chl a fluorescence: Modulated Chl a
... formation of reactive oxygen species that can damage membranes and proteins (Zhu, ...effects of salt stress on photosynthesis have been studied intensively, the mechanisms of inhibition of ...
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