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Showing 1 to 20 of 74 for “"water relations"”.
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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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Water relations and cutting management of switchgrass
… two successive drought cycles on performance and water relation parameters of switchgrass and tall fescue were studied in growth chamber conditions. Water was withheld from conditioned plants until elongation of tillers stopped. Then pots were rewatered and a new drought cycle followed. Control …
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Crop traits to improve plant water relations under abiotic stresses
… scion growth and drought resilience to improve water management and rootstock selection in viticulture. Chapter 2 aims to compare, based on a literature review, the salt stress responses of domesticated tomatoes and their wild relatives to identify traits that could enhance salt tolerance in …
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The influence of fungi upon soil structure and soil water relations
… of soil structural stability and soil water processes was assessed through the application of laboratory investigations and a field based analysis. The impact of an arbuscular mycorrhizal (AM) fungal exudate glomalin (a glycoprotein), proposed to be hydrophobic was assessed for a …
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Comparative water relations of indigenous and invasive Australian Proteaceae in fynbos
Water-use efficiency (WUE) as reflected in the leaf carbon stable isotope ratio was compared between co-occurring indigenous fynbos proteoids and invasive Australian hakeas H. sericea, H. gibbosa and H. suaveolens. At the driest site, H. suaveolens was slightly more WUE than several co-occurring …
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Understanding plant water relations and root biomechanics for hydro-mechanical reinforcement of slopes
… ten species showed large differences in terms of water uptake, which translated to significant differences in matric suction and soil strength. Species with the largest water uptake increased soil strength more than ten times that in fallow soil. Specific leaf area, root length density and …
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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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Soilless Substrate Hydrology and Subsequent Impacts on Plant-Water Relations of Containerized Crops
Freshwater is a finite resource that is rapidly becoming more scrutinized in agricultural consumption. Specialty crop producers, especially ornamental crop producers, must continually improve production sustainability, with regards to water resource management, in order to continue to stay …
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Water relations of the endemic New Zealand frogs Leiopelma archeyi, L. Hamiltoni and L. Hochstetteri
Aspects of habitat and water balance physiology were compared between the endemic and anatomically primitive New Zealand frogs Leiopelma archeyi, L. hamiltoni and L. hochstetteri. Field studies in an area of the Coromandel Range showed that the partially sympatric L. archeyi and L. hochstetteri had …
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Stock plant nutrition and stem cutting water relations during propagation of four woody nursery crops
… Stem cutting survival and rooting, midday xylem water potential, and basal water uptake all generally increased with increasing medium moisture level. Incidence of cutting basal rot was not directly related to medium moisture level, but was related to species and growth stage of the stock plant. …
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Hydropolitical peacebuilding. Israeli-Palestinian water relations and the transformation of asymmetric conflict in the Middle East.
Recognising water as a central relational location of the asymmetric Israel- Palestinian conflict, this study critically analyses the peacebuilding significance of Israeli, transboundary water and peace practitioner discourses. Anchored in a theoretically-constructed framework of hydropolitical …
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Water relations, carbon fixation and growth rates of two leaf succulent species under different water regimes
… in a growth chamber and subjected to different water regimes. The diurnal patterns of water loss and ca1rbon gain were investigated under optimal and drought conditions after 30, 50 and 60 days of treatment. Gas exchange data of both species showed that C3 photosynthesis was adopted when ·the …
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Water relations of simple sugar solutions and skim milk powder as studied by nuclear magnetic resonance spectroscopy
The water mobility in simple sugar-water systems as a function of sugar concentration was monitored by $\sp1$H, $\sp2$H and $\sp1$H decoupled $\sp{17}$O NMR transverse relaxation rates (R$\sb2$). For all three nuclei, R$\sb2$ increased with increasing sugar concentration with different magnitude …
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Physiological studies of in vivo and in vitro water requirements and water relations of Chrysanthemum morifolium Ramat
… Ramat. showed a significant reduction in plant water status under both sunny and cloudy conditions in response to depriving them of water. Water potential, osmotic potential, and pressure potential proved appropriate parameters for indicating plant water status. Diurnal changes in water status …
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Carbon and Water Relations in Pinus Taeda: Bridging the Gap across Plant Physiology, Genomics, and Global Climate Change
… it focused on processes affecting carbon and water exchange in forest trees because (1) trees are long-lived species that might face repeated environmental challenges; (2) relatively little information exists about the genes and the molecular mechanisms regulating structural and physiological …
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