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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 31 for “"leaf water potential"”.
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The Effect of Leaf Pubescence on Leaf Water Potential, Apparent Photosynthetic Rate and Yield of Three Isogenic Lines of Soybeans (Glycine Max (L.) Merrill)
Made available in DSpace on 2014-12-12T00:17:40Z (GMT). No. of bitstreams: 1 7105103.pdf: 4133228 bytes, checksum: 52cc2db19b42807b2be34163259363f7 (MD5) Previous issue date: 1970
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Transpiration and the water relations of barley
Measurements of evapotranspiration, leaf water potential and stomatal conductance were made with a barley crop over the spring and summer of 1979. From these measurements a model of transpiration from barley was developed. Predictions of the model were compared with Bowen ratio measurements of …
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Dynamics of soybean leaf hydraulic conductance and diurnal soybean transcriptome analysis
… must remain hydrated with a constant flow of water through the leaf if stomata are to remain open for CO2 acquisition during the day. Thus, leaf hydraulic conductance (Kleaf), a measure of the leaf’s capacity to transport water to the sites of evaporation within the leaf, is closely linked and …
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Novel water-use strategies of Colorado wetland plants: implications for wetland water loss
… is a tension between wetland restoration and water rights. Wetlands, relied upon by humans and wildlife alike, also contribute significantly to evapotranspiration (ET) due to higher water tables and dense vegetation. It is therefore critical to understand how much water wetlands lose to …
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Mechanisms of Acclimation of Photosynthesis and Leaf Growth to Water Deficits in Sunflower
Repeated water deficits can alter the response of photosynthesis and leaf growth to subsequent water deficits, but the mechanisms by which these changes occur are unknown. This study was conducted to evaluate the mechanisms by which photosynthesis and leaf growth acclimate to low leaf water …
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Cyclic irrigation of turfgrass using a shallow saline aquifer
Utilization of poor quality waters in the urban landscape has the potential of saving large quantities of good quality water for higher priority uses. Bernudagrass in particular is well suited to be irrigated with poorer quality water. A two-year field study was conducted to determine the long-term …
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Physiological variation of Garry oak (Quercus garryana) seedlings to drought stress
… restoration efforts by informing growers of the potential differences between the acorn collection sites. Acorns from six Washington populations east of the Cascades, as well as one population from Whidbey Island, were collected and grown in containers under controlled conditions. The plants were …
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Agronomic and physiological impacts of irrigation frequency on green basil (Ocimum basilicum L.)
Water scarcity is a major factor restricting agricultural production and irrigation globally, with sustainable agricultural development calling for less irrigation water use and more production per unit of water applied. Improved understanding of plant physiological responses to water stress, and …
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Feasibility study using remote sensing technologies to improve zonal vineyard management
… tools were undertaken. The variables included leaf water potential, soil moisture, canopy size, vine health, vineyard yield, and fruit composition, which further impacts wine quality. The remote sensing data analysis tools included normalized difference vegetation index (NDVI), and other …
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Utilisation of Proximal Sensing Technology to Map Variability in Ontario Vineyards
… could be correlated with soil moisture, vine water status, yield components and grape composition, and whether temporally consistent relationships could be established. The research was carried out on three experimental sites involving two Riesling, two Cabernet franc and two Pinot noir blocks …
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Asymptomatic infections of Euphorbia lathyris by Macrophomina phaseolina.
… without apparent symptoms were subjected to low-water and high-temperature stress treatments in growth chambers. Root infection was not found to be dependent upon any stress. Lesion development was significantly dependent upon the imposition of any stress treatment, and further root colonization …
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The effect of timing of growing season drought on flowering of Andropogon gerardii
… (>2-fold) than non-flowering individuals. The potential for flowering may be affected by precipitation at different times via different mechanisms (e.g. carbon gain via rapid growth early in the growing season vs. direct effects on stalk elongation later in the growing season). In order to test …
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Quantifying the Sensitivity of Land-Surface Models to Hydrodynamic Stress Limitations on Transpiration
… of recent advances in our understanding of water flow and storage in trees or of tree and canopy structure. The lack of mechanistic representation of the tree-hydrodynamic process should therefore lead to typical intra-daily patterns of error in results of current models.We use a comparison …
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Water Relations of Ponderosa Pine in Contrasting Environments: Implications for Global Climate Change
… most relevant allometric component controlling water transport is the ratio of biomass allocated to leaves versus sapwood (AL/AS). Within Pinus, trees decrease ALAS in response to rising VPD. Thus, rises in air temperature and VPD may profoundly alter the water relations of trees and forests. I …
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Observations of mycorrhizal inoculation of pin and scarlet oak production in containers
… beneficial for the host plant. Increased growth, water relations, nutrient acquisition, amelioration of the effects of metal toxicity, and increased resistance to pathogens are all benefits attributed to plants colonized by mycorrhizal fungi. A large body of literature exists that indicates that …
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Use of Bioinformatics to Investigate Abiotic Stress in Arabidopsis and to Design Primers for Pathogen Detection
… (Anti-PLDα) were drought stressed by withholding water. Anti-PLDα experienced severe water stress at the same time period that Col-0 experienced less water stress. Diurnal leaf water potential (LWP) measurements showed that Anti-PLDα had lower LWP than Col-0 under drought stress conditions. …
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Burkholderia phytofirmans strain PsJN effects on drought resistance, physiological responses and growth of switchgrass
… to PsJN inoculation by tracking growth and leaf physiology. In a third experiments, we tested the effects of PsJN on growth and leaf-level physiology of switchgrass under a moderate pre-drought conditioning and a successive severe drought stress. PsJN inoculation increased biomass and …
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Effects of deficit irrigation frequency on plant growth, water use and physiology of Pelargonium x hortorum and tomato (Solanum lycopersicum L. cv. Ailsa Craig)
In horticultural sectors where water is a threatened resource, altering irrigation frequency may present a viable approach to reduce water use, without any negative effect on crop yield and/or quality. However, our understanding of the physiological impact of this approach in containers in a peat …
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Using GPS, GIS & remote sensing to understand Niagara Terroir : Pinot noir in the Four Mile Creek & St. David's Bench sub-appellations
The relationships between vine water status, soil texture, and vine size were observed in four Niagara, Ontario Pinot noir vineyards in 2008 and 2009. The vineyards were divided into water status zones using geographic information systems (GIS) software to map the seasonal mean midday leaf water …
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Moisture stress conditioning, potassium nutrition, and tolerance of Salvia splendens 'Bonfire' to moisture stress
The objective of this study was to determine the leaf water relations, gas exchange, and growth of the bedding plant salvia Salvia splendens 'Bonfire‘ as influenced by moisture stress conditioning (MSC - exposing plants to 4 sublethal dry-down cycles) and potassium (K) nutrition. Plants were …
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