Global ETD Search
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 15 of 15 for “"Dark respiration"”.
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The short-term effects of fertilization on loblolly pine (Pinus taeda L.) photosynthesis, dark respiration, and leaf area
… pine light-saturated photosynthesis (Asat), dark respiration (Rd), volume, height, basal diameter, and leaf area responses in eight clones to fertilization (112 kg/ha N) over the course of a growing season in the field. Measurements were conducted intensively before and after fertilization in …
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Variation in the physiological processes of eastern white pine (Pinus strobus L.) differing in sensitivity to ozone, sulfur dioxide, and nitrogen dioxide
… dioxide on photosynthesis, transpiration, and dark respiration. Genetically controlled plant responses to pollutant exposures were found in all clones with various degrees of repeatability. A general plant sensitivity to all of the pollutants was not observed in test clones. Foliar symptom …
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Temperature dependence of plant photosynthesis and respiration using the Macromolecular Rate Theory (MMRT)
… transport capacity (Jmax), and the components of dark respiration (Rdark). The central objective was to identify temperature dependence models for each trait that were both parsimonious and physiologically interpretable. The research combined controlled leaf gas exchange across wide ranges of …
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The Regeneration Niche in Bottomland Hardwood Forests: Tree and Herbaceous Communities Along Interacting Gradients of Flood and Light in East Texas Floodplains
… species responded to shading by a reduction in dark respiration rate, light compensation point, and height growth rate. Both species responded to flooding by increasing diameter growth rate, but only when not subject to shade. Together, these findings contribute to a broader understanding of the …
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Effect of nitrogen fertilization on the physiological damage and subsequent recovery of mite-infested apple leaves
… N trees retained higher Pn rates. Transpiration, dark respiration, relative water content, leaf nitrogen, and total chlorophyll were negatively related to MD, but specific leaf weight was positively related to MD. No interaction was found between N treatment and mite feeding for these parameters. …
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Some aspects of the seed development and seedling growth of rimu, Dacrydium cupressinum, Lamb
… in an open circuit system. Photosynthesis and dark respiration rates were measured in rimu and compared with Pinus radiata D.Don. Light saturated photosynthesis rate (g CO₂ absorbed per m² total foliage surface area per hour) of P. radiata (0.79g m⁻² h⁻¹) was more than four times that of rimu …
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Canopy light environment influences apple leaf physiology and fruit quality
… Stomatal conductance, specific leaf weight, dark respiration, and light levels were greater for the exterior leaves throughout the season. Instantaneous light measurements made on a single uniformly overcast day after the canopy was fully-developed (average of four times during the day) …
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Net photosynthesis and photosynthate partitioning/of day-neutral and Junebearing strawberry plants as influenced by fruiting
… treatments for stomatal conductance for CO₂ or dark respiration during any week of the fruiting cycle. In another experiment, deblossoming day-neutral strawberry plants (cv. Tribute) increased the amount of ¹⁴C translocated to the newly-emerging leaves 48 hrs after treatment with ¹⁴CO₂. During …
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Developmental and physiological responses of soybean to elevated growing temperatures
… seasons. Optimal photosynthetic temperature and dark respiration were observed during 2018 and 2019. Regression analysis was performed using the average canopy temperature from two weeks prior to measurements. There was little to no change in photosynthetic capacity with increasing canopy …
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Effects of temperature and location on the photosynthesis-irradiance relationship of the seagrass Halophila ovalis
… with oxygen concentrations measured in the dark (respiration), and light (30-300 μmol photons m-2 s-1). At all locations, temperature affected all photosynthetic parameters, but there were significant Temp x Location/Site interactions (p This study showed that there was a significance …
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Physiological responses of sun and shade foliage in thinned and unthinned ten-year-old loblolly pine stands
… capacity, lower light compensation point and dark respiration rates. Observed physiological differences were not related to plant water status, chlorophyll content or chlorophyll a/b ratio. The higher light saturated gas exchange rates for upper crown foliage were paralleled by lower stomatal …
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The Physiological Response of sub-Arctic Lichens to Their Abiotic Environment
… storage, on the rate of net photosynthesis and dark respiration of sample thalli, in a series of studies on the four lichen species named above. Environmental temperature and light intensity both significantly affected the rate of thallus net photosynthesis (NP) in samples of all four species. …
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Environmental Controls on Foliar Respiration in Arctic Plants
… of variables such as foliar photosynthesis, respiration, photorespiration, mitochondria and chloroplast size and density, and physical leaf traits. Due to the extreme photoperiod experienced by arctic vegetation, respiration in the light (estimated using the Kok method) was quantified in …
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Carbon and Water Relations in Pinus Taeda: Bridging the Gap across Plant Physiology, Genomics, and Global Climate Change
… the degradation of carbohydrates through respiration. An increase in carbohydrates degradation is particularly relevant in the context of carbon balance of forest trees because of the potential for enhanced leaf and tree respiration leading to a reduced sink capacity for CO<sub>2</sub>. …