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Letteratura scientifica selezionata sul tema "Water stress"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 27 luglio 2024

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Articoli di riviste sul tema "Water stress"

Umare, Akshay C., e Saifan Makandar. "Stress Analysis With Different Geometry of Water Tank". Journal of Advances and Scholarly Researches in Allied Education 15, n. 2 (1 aprile 2018): 608–11. http://dx.doi.org/10.29070/15/56935.

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Várallyay, Gy. "Soil-water stress". Cereal Research Communications 37, n. 2 (giugno 2009): 315–19. http://dx.doi.org/10.1556/crc.37.2009.suppl.7.

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Ault, Toby. "Island water stress". Nature Climate Change 6, n. 12 (24 novembre 2016): 1062–63. http://dx.doi.org/10.1038/nclimate3171.

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Meldolesi, Anna. "Water stress survivors". Nature Biotechnology 31, n. 3 (marzo 2013): 188. http://dx.doi.org/10.1038/nbt0313-188a.

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Hosnedl, V., e H. Honsová. "Barley seed sensitivity to water stress at germination stage". Plant, Soil and Environment 48, No. 7 (21 dicembre 2011): 293–97. http://dx.doi.org/10.17221/4370-pse.

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Barley seed sensitivity to water and anoxia was tested. Standard germination, mean time of germination (MTG), germination in sand wetted by water to 100% water capacity (anoxia) or by hydrogen peroxide (wet conditions without anoxia), germination in 0.75% hydrogen peroxide and laboratory emergence (15 and 20°C) were evaluated. Barley seed responds sensitively to stress conditions during germination. Significant germination decrease was found in abundance of water. Percentage of reduction depends on the variety and on the year of seed production. Extreme values of water sensitivity are in interval 4–90%. At wetted sand by 0.75%, solution of H<sub>2</sub>O<sub>2</sub> the germination was significantly less reduced. That means that barley seed is very sensitive to oxygen deficiency above all and is less injured by quick imbibition. Heterogeneity in seed vigour was demonstrated in laboratory emergence tests. Quick test of germination in 0.75% hydrogen peroxide deserves attention for its high correlation coefficient with the seed laboratory emergence. The results significantly demonstrate a higher sensitivity of deteriorated seed to germination in abiotic stresses conditions. Variability in speed of germination is increasing, which unfavourably extends the mean time of germination.

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Pospisilova, J., H. Synkova e J. Rulcova. "Cytokinins and Water Stress". Biologia plantarum 43, n. 3 (1 settembre 2000): 321–28. http://dx.doi.org/10.1023/a:1026754404857.

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Marshall, K. "WATER STRESS DOWN SOUTH". Journal of Experimental Biology 215, n. 7 (7 marzo 2012): vi. http://dx.doi.org/10.1242/jeb.064097.

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Czech, Viktória, Edit Cseh e Ferenc Fodor. "ARSENATE INDUCES WATER STRESS". Journal of Plant Nutrition 34, n. 1 (dicembre 2010): 60–70. http://dx.doi.org/10.1080/01904167.2011.531359.

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Schuab, S. R. P., A. L. Braccini, C. A. Scapim, J. B. França-Neto, D. K. Meschede e M. R. Ávila. "Germination test under water stress to evaluate soybean seed vigour". Seed Science and Technology 35, n. 1 (1 aprile 2007): 187–99. http://dx.doi.org/10.15258/sst.2007.35.1.17.

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Penella, C., S. G. Nebauer, S. López-Galarza, A. SanBautista, A. Rodríguez-Burruezo e A. Calatayud. "Evaluation of some pepper genotypes as rootstocks in water stress conditions". Horticultural Science 41, No. 4 (25 novembre 2014): 192–200. http://dx.doi.org/10.17221/163/2013-hortsci.

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 Water stress is a major environmental factor that limits crop production and it is important to develop crop varieties with higher yield under water scarcity. Increased pepper tolerance to water stress through grafting onto robust rootstocks could be an optimal alternative in the context of environmentally friendly agriculture. Our work evaluated the behaviour of 18 pepper genotypes during vegetative and reproductive stages under water stress in order to select tolerant genotypes to be used as rootstocks for pepper cultivation. The pepper tolerance screening was based on photosynthetic parameters. The genotypes Atlante, C-40, Serrano, PI-152225, ECU-973, BOL-58 and NuMex Conquistador were revealed as the most tolerant genotypes to water stress because they maintained net photosynthetic rate levels under water stress conditions. The selected genotypes were validated as rootstocks on a pepper cultivar in terms of productivity under severe water stress. Plants grafted onto cvs Atlante, PI-152225 and ECU-973 showed higher marketable yields when compared with ungrafted cultivar.  

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Più fonti

Tesi sul tema "Water stress"

Umponstira, Chanin. "Ozone and water stress interactions". Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341462.

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Al-Najafi, Mohammad Abdul Aziz. "Root shrinkage in relation to water stress". Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279828.

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Perez, Jose 1950. "WATER AND NITROGEN EFFECTS ON THE CROP WATER STRESS INDEX OF COTTON". Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275339.

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Spinelli, Gerardo. "Water Stress And Water Use Of Almonds In California| Linking Plant Water Status And Canopy Transpiration". Thesis, University of California, Davis, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3723733.

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Almond water use was investigated at the leaf, plant and canopy level under a range of irrigation conditions in commercial orchards in California. Understanding plant response to water stress, specifically the behavior of plant transpiration and water use during periods of water stress, has important implications for irrigation scheduling in agriculture but also for water resources management and policy making.

Leaf gas exchange measurements of stomatal conductance and photosynthetic rate were performed at midday on shaded and on sunlit leaves, with midday stem water potential used to assess plant water stress. An essentially linear decline in both photosynthetic rate (from 25 to 5 μmol m^-2 s^-1) and stomatal conductance (from 400 to 50 mmol m^-2 s^-1) as stem water potential declined over the range of -0.5 to -3 MPa was observed in sunlit leaves. These data indicated a strong sensitivity of leaf-level physiological processes to water stress. However, evapotranspiration at the canopy level, measured using Eddy Covariance, did not show a reduction relative to atmospheric demand during periods of water stress. The apparent disconnect observed between leaf conductance, responsive to water stress and canopy evapotranspiration, insensitive to water stress, is the central problem investigated in this study.

When the transpiration data was analyzed in the framework of a "Big Leaf" model, decoupled conditions (i.e. a limited stomatal control of transpiration) were shown to prevail at the experimental site, contrary to previous findings reported in the literature for tall crops such as almond orchards. Low coupling implies only a moderate sensitivity of transpiration to stomatal closure. Measured coupling increased substantially with wind speed but showed a wide range of values at the low wind speeds (<1m s^-1) that were observed at the site. At any wind speed however, higher canopy resistance resulted in higher coupling. The high leaf area index observed in the orchard may have been responsible for causing decoupled conditions, because when leaf area decreased as a result of harvesting operations, canopy transpiration appeared to become more sensitive to water stress.

Cumulative daily sap velocity was used as an estimate of plant transpiration. At the plant level, contrasting behaviors were observed in plant transpiration in the presence of water stress, depending on the duration and intensity of the stress. During long soil dry-down periods encompassing several weeks, plant transpiration relative to the evaporative demand of the atmosphere showed a statistically significant decline associated with a decrease in stem water potential and in stomatal closure. However, when the cycle of water stress was short (days), reductions in stem water potential seemed to be associated with an increase in cumulative sapflow velocity. The analysis of these results led to the development of a simple model that describes the theoretical interactions between three dependent variables, namely stem water potential, stomatal conductance and transpiration. The model output suggested that in wet soil, an increase in transpiration may be caused by increasing evaporative demand even if stem water potential and stomatal conductance decrease.

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Lehle, F. R., e A. M. Zegeer. "Effects of Oxygen Stress and Water Stress on Cotton (Gossypium hirsutum) Seed Growth". College of Agriculture, University of Arizona (Tucson, AZ), 1989. http://hdl.handle.net/10150/204832.

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The effects of oxygen stress and water stress on cotton seed radicle growth was studied. High vigor Deltapine 90 seed were imbibed in individual test tubes at 28°C for 28 hours. Seed were then subjected for 2 hours at 28°C to either 1) oxygen stress imposed by N₂ gas, 2) water stress imposed by polyethylene glycol 6000 (0.8 gm mL water⁻¹), or 3) a combination of both 1) and 2). Following imposition of either oxygen stress or water stress, radicle growth stopped temporarily; growth resumed while either stress was still imposed but at a greatly reduced rate relative to the unstressed control. Cotton radicle growth was prevented however, in the presence of both oxygen and water stress. The prevention of growth was reversible, as growth resumed when both stresses were relieved.

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French, Robert John. "Leaf senescence and water stress in wheat seedlings /". Title page, contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phf875.pdf.

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Otto, Marina Shinkai Gentil. "Physiological responses of forest species to water stress". Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/11/11144/tde-05112015-154241/.

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Abiotic and biotic stresses affect tree growth and play a major role in determining the geographic distribution of species. The objective of this study is to elucidate the following questions: (1) are GABA aminoacid and stomatal control good indicators of tolerance to water stress in Eucalyptus clones? In addition, what are the anatomical differences between drought-tolerant and drought-sensitive clones of Eucalyptus? (2) Are there differences of xylem vulnerability to cavitation in Pinus flexilis families susceptible and resistant to white pine blister rust (WPBR) and with different origins (high and low altitudes)? Two studies were carried out to elucidate the issues above. On chapters 1, eight Eucalyptus clones from different geographical and climatological conditions, three drought-sensitive (CNB, FIB and JAR), three drought-tolerant (GG, SUZ and VM), and two plastics (VER and COP), were studied in normal water supply (control treatment) and in water stress conditions (stress treatment). The first chapter concluded that GABA is an aminoacid very sensitive to water stress, but there was no relation between GABA concentration and tolerance to water stress of the clones. In addition, all clones decreased stomatal conductance with increasing vapor pressure deficit, and plastics and drought-tolerant clones (except GG) presented lower stomatal sensitivity to vapor pressure deficit under stress conditions than drought-sensitive clones. Besides, all clones showed differences on the anatomical parameters between, and only COP (plastic) and SUZ (drought-tolerant) showed homogeneous mesophyll and amphi-hipostomatic leaves. All clones increased the number of stomata and reduced leaf thickness of the leaves formed after water stress period. On the chapter 2, we studied 12 families of Pinus flexilis originating from high and lower altitudes, in which six families previously shown to contain the dominant C4 allele (resistant to WPBR) and six families without C4 allele (susceptible to WPBR). This study showed that the mean cavitation pressure (MCP) of Pinus flexilis varying between 3.63 a -4.84 Mpa, although there was a significant difference in vulnerability to cavitation comparing all families, this variable was not related to WPBR and origin region. These studies highlight that the physiological responses of plants under water stress conditions are important tools that can be used to complement the strategies of genotype selection in forest breeding programs.
Estresses abióticos e bióticos podem afetar o crescimento das árvores e desempenham um papel importante na determinação da distribuição geográfica das espécies. O objetivo deste estudo, foi elucidar as seguintes questões: (1) o aminoácido GABA e o controle estomático são bons indicadores da tolerância ao estresse hídrico em clones de Eucalyptus? E quais são as diferenças anatômicas entre clones de Eucalyptus tolerantes e sensíveis ao estresse hídrico? (2) existem diferenças de vulnerabilidade a cavitação do xilema entre famílias de Pinus flexilis suscetíveis e resistentes à ferrugem do pinho branco (WPBR) e com diferentes procedências (elevada e baixa altitudes)? Dois estudos foram desenvolvidos para elucidar as questões acima descritas. No capítulo 1, oito clones de Eucalyptus de diferentes procedências e condições climáticas, sendo três clones sensíveis ao estresse hídrico (CNB, FIB e JAR), três clones tolerantes ao estresse hídrico (GG, SUZ e VM) e dois clones plásticos (VER e COP), foram estudados sob duas condições distintas: sob adequado suprimento de água (tratamento controle) e sob condições de estresse hídrico (tratamento estresse). Do primeiro capítulo concluiu-se que o GABA é um aminoácido que possui alta sensibilidade ao estresse hídrico, no entanto, não houve relação entre a concentração de GABA e os níveis de tolerância ao estresse hídrico dos clones. Além disso, todos os clones reduziram a condutância estomática em relação ao aumento do déficit de pressão de vapor (DPV), sendo que, sob condições de estresse hídrico, os clones plásticos e tolerantes à seca (exceto o clone GG) apresentaram menor sensibilidade estomática ao DPV do que os clones sensíveis ao estresse hídrico. Além disso, todos os clones apresentaram diferenças anatômicas, sendo que, diferentemente dos demais, os clones COP (plástico) e SUZ (tolerante) apresentaram mesofilo homogêneo e folhas anfi-hipoestomáticas. Todos os clones aumentaram a quantidade de estômatos e reduziram a espessura foliar das folhas formadas após períodos de estresse hídrico. No segundo capítulo foram avaliadas 12 famílias de Pinus flexilis procedentes de regiões de baixa e alta altitudes, sendo seis famílias contendo um alelo dominante C4 (resistente à WPBR) e seis famílias sem o alelo C4 (suscetíveis à WPBR). Este estudo apresentou uma variação da pressão média da cavitação (MCP) para Pinus flexilis de -3,63 a -4,84 Mpa, e embora tenha havido uma diferença significativa da susceptibilidade a cavitação entre todas as famílias estudadas, esta variável não relacionou-se com a susceptibilidade a doença WPBR e com a região de procedência das famílias. Estes estudos comprovam que a avaliação das respostas fisiológicas das plantas sob condições de estresse hídrico são importantes ferramentas que podem ser utilizadas para complementar as estratégias da seleção de genótipos em programas de melhoramento florestal.

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Beckett, Heath. "Remote sensing of water stress in fynbos vegetation". Bachelor's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/25902.

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I aim to determine whether or not remote sensing, through multispectral, satellite and digital photography, is a feasible and accurate method for determining drought stress in Fynbos vegetation. I hypothesize that (1) water stress in fynbos is detectable with the use of a remote sensing index, namely NDVI and (2) that the remotely sensed trends will correlate with ground truth measures of water stress.

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Correia, Barbara dos Santos. "Water stress and recovery in Eucalyptus: physiological profiles". Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/10165.

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Mestrado em Biologia Aplicada
Em Portugal, cerca de 700,000 ha foram já plantados com clones de Eucalyptus globulus, selecionados pelas suas elevadas taxas de crescimento, alta produção de polpa e adaptabilidade ambiental. Contudo, a produtividade das plantações de E. globulus tem enfrentado sérias limitações, principalmente devido à fraca disponibilidade de água. A seca é um importante stress abiótico que afeta negativamente o crescimento e o desenvolvimento das plantas, causando um conjunto de respostas fisiológicas, bioquímicas e moleculares. Embora esteja disponível um grande número de estudos que descreve as respostas das plantas ao stress hídrico, apenas alguns trabalhos se debruçam sobre os mecanismos que permitem a recuperação. Além disso, vários estudos descrevem também como diferentes genótipos podem diferir na capacidade de lidar com a seca. Considerando que manter a produção durante o stress hídrico não é o mais relevante, mas sim a capacidade de sobreviver e recuperar rapidamente após a re-hidratação, o objetivo deste estudo foi compreender os mecanismos envolvidos na recuperação, de modo a selecionar coleções clonais adequadas a plantações sustentáveis num clima mediterrânico. Com essa finalidade, dois clones de E. globulus (AL-18 e AL-126) foram submetidos a um período de três semanas em stress hídrico, seguido por uma semana de recuperação. Um perfil fisiológico foi obtido para cada genótipo, pela avaliação do crescimento, estado hídrico, peroxidação lipídica, respostas do aparelho fotossintético, trocas gasosas e concentração de ABA. Os principais resultados deste trabalho levam a concluir que: i) os genótipos escolhidos foram altamente tolerantes às condições testadas; ii) os clones selecionados apresentaram uma resposta similar na maioria dos parâmetros testados (exceto MDA, pigmentos, parâmetros fotossintéticos e ABA); iii) o clone AL-126 foi o mais resiliente à seca, mantendo taxas de crescimento mais elevadas em stress e após re-hidratação.
In Portugal, about 700,000 ha have been established with Eucalyptus globulus clones selected for their high growth rates, high pulp yield and environmental adaptability. However, productivity in E. globulus plantations has encountered serious limitations, mostly because of water availability. Drought is a major abiotic stress negatively affecting plant growth and development that causes an array of physiological, biochemical and molecular responses in plants. Apart from the great number of studies reporting on plant responses to drought stress and on the mechanisms to overcome stressful conditions, only a few reports providing evidence about the capacity of recovery and the underlying processes during recovery from drought are available. Moreover, ecophysiological studies have reported that different genotypes differ in their capacity to cope with drought. Considering that maintenance of production during drought is not the most important consideration, but rather the capacity to survive and recover rapidly after rewatering, the aim of this study was to understand the underlying mechanisms in recovery in order to select suitable clonal collections for sustainable plantations in a Mediterranean climate. For this propose, two E. globulus clones (AL-18 and AL-126) were subjected to a three-week water stress period, followed by one week recovery. A physiological profile was obtained for each genotype, assessing growth, water status, lipid peroxidation, photosynthetic responses, gas exchanges and ABA concentration. The main results of this work led us to conclude that: i) the chosen genotypes were highly tolerant to the conditions tested; ii) the selected clones presented a similar response in most of the tested parameters (except for MDA, pigments, fluorescence parameters and ABA); iii) clone AL-126 was the most resilient to drought, maintaining higher growth rates under stress and after rewatering.

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Berenguer, Helder Duarte Paixão. "Eucalyptus predisposition to Neofusicoccum kwambonambiense under water stress". Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/22330.

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Mestrado em Biologia Molecular e Celular
In Portugal, Eucalyptus, particularly Eucalyptus globulus, occupies more than 800 000 ha and, due to being a major source of biomass for fiberboard, industrial charcoal, fuel wood and paper pulp, has become a key genus, with a considerable economic importance. However, E. globulus productivity faces new pressures, with climate change-driven drought as one of the most hostile ones. Drought can lead to growth impairment and yield reduction: directly; or indirectly, through the increase of plant susceptibility to pathogens by a predisposition mechanism. Neofusicoccum kwambonambiense is an endophytic opportunist phytopathogen known to severely affect E. globulus, whose incidence has already been reported in Portugal. Taking all in consideration, it is of major importance to assess the predisposition effect that drought may have on the N. kwambonambiense - E. globulus interaction. For such purpose, four treatment groups were established: E. globulus were firstly subjected to a 66-days acclimation period in which plants were periodically watered (80% of field capacity). After that, two groups were exposed to a progressive water supply restriction. The other two remained well-watered. Once water-stressed plants achieved 18% of field capacity (23 days), a well-watered and a water-stress group were inoculated with N. kwambonambiense. All treatments were kept in these conditions throughout a 65 days’ period, at which moment a set of morphological, physiological and biochemical parameters was obtained. Well-watered plants, despite being infected with N. kwambonambiense, presented an overall photosynthetic increase, which enabled plant defense through the production of sugars, proline and salicylic acid. Oxidative damages (partially observed through malondialdehyde content), were avoided in part due to proline and soluble sugars. Water stress lead to a direct growth impairment confirmed through an indole-acetic-acid content decrease. A water-potential reduction occurred, which, together with abscisic acid, lead to stomatal closure and overall photosynthetic efficiency decline. Oxidative damages weren’t properly managed and further affected E. globulus. Furthermore, N. kwambonambiense was found to promote a jasmonic acid content increase, typical of necrotrophic pathogens, which may suggest a lifestyle change from hemibiotrophic to necrotrophic as plant cells progressively degenerate. Ultimately, water-stressed E. globulus presented larger external lesion extensions and steam cankers and a superior internal fungi progression. Our results conclusively demonstrate that water stress created a better substrate for fungi development and decreased the plant’s ability to respond. Such resulted in higher susceptibility and disease severity confirming predisposition.
Em Portugal, o eucalipto, particularmente o Eucalyptus globulus, ocupa mais de 800 000 ha. Devido a ser uma importante fonte de biomassa para painéis de fibras, carvão industrial, lenha e pasta de papel, tornou-se um género chave de considerável importância económica. Contudo, a produtividade de E. globulus tem encontrado novas pressões, sendo a seca resultante das alterações climáticas, uma das mais hostis. A seca pode levar a uma diminuição do crescimento e produtividade: diretamente; ou indiretamente através do aumento da suscetibilidade a agentes patogénicos através da predisposição. O fungo ascomiceto Neofusicoccum kwambonambiense é um agente fitopatogénico endofítico oportunista que se sabe afetar severamente E. globulus, e cuja presença já fora confirmada em Portugal. Tomando tal em consideração, torna-se importante avaliar o efeito de predisposição que a seca poderá ter na interação N. kwambonambiense - E. globulus. Para tal foram criados quatro grupos de tratamento: E. globulus foram primeiramente sujeitos a um período de aclimatização de 66 dias no qual foram periodicamente irrigados (80% de capacidade de campo). Seguidamente, dois grupos foram sujeitos a uma diminuição progressiva da irrigação. Os outros dois grupos permaneceram bem regados. Uma vez que os tratamentos stressados atingiram 18% de capacidade de campo (23 dias), um grupo bem regado e um grupo stressado foram inoculados com N. kwambonambiense. Todas os tratamentos foram mantidos nestas condições durante um período de 66 dias, findo o qual foi obtido um conjunto de parâmetros morfológicos, fisiológicos e bioquímicos. As plantas bem regadas, apesar de terem sido inoculadas com N. kwambonambiense apresentaram um aumento dos parâmetros fotossintéticos o que terá permitido a defesa da planta através de uma produção amplificada de açúcares, prolina e ácido salicílico. Danos oxidativos (parcialmente observados através do conteúdo em malondialdeído) foram evitados, em parte, devido à ação da prolina e açúcares solúveis. O stress hídrico levou a uma diminuição do crescimento confirmado pela redução do conteúdo em ácido-indole-acético. Ocorreu uma diminuição do potencial hídrico, a qual, em conjunto com o aumento do ácido abscísico, levou ao fecho dos estomas e diminuição da fotossíntese. Os danos oxidativos não foram controlados, afetando o estado do E. globulus. Ademais, o N. kwambonambiense provocou um aumento do conteúdo em ácido jasmónico, típico de agentes patogénicos necrotróficos, o que poderá sugerir que o fungo passou de um estilo de vida hemibiotrófico para necrotrófico, à medida que as células degeneravam. Os E. globulus stressados apresentavam maiores lesões externas e cancros, conjuntamente com uma maior progressão interna do fungo. Os nossos resultados comprovam que a seca criou um melhor substrato para o desenvolvimento do fungo e diminuiu a capacidade de resposta da planta. Tal resultou num aumento da suscetibilidade e severidade da doença confirmando a predisposição.

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Libri sul tema "Water stress"

Hasegawa, Hiroshi, e Md Mofizur Rahman. Water stress. 2^a ed. Rijeka, Croatia: Intech, 2011.

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Ashraf, M., M. Ozturk e H. R. Athar, a cura di. Salinity and Water Stress. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9065-3.

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Ahmad, Parvaiz, a cura di. Water Stress and Crop Plants. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119054450.

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Xu, Meng, e Chunhui Li. Application of the Water Footprint: Water Stress Analysis and Allocation. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0234-7.

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Microbial water stress physiology: Principles and perspectives. Chichester: Wiley, 1990.

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Ripple, William J. Spectral reflectance relationships to leaf water stress. Corvallis, Or: Environmental Remote Sensing Applications Laboratory - ERSAL, Oregon State University, 1986.

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Riemenschneider, Don E. Water stress promotes early flowering in jack pine. St. Paul, Minn: North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1985.

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service), SpringerLink (Online, a cura di. Water Resources in Mexico: Scarcity, Degradation, Stress, Conflicts, Management, and Policy. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2011.

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Gorman, J. Survey of PWR water chemistry. Washington, DC: Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1989.

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Gorman, J. Survey of PWR water chemistry. Washington, DC: Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1989.

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Capitoli di libri sul tema "Water stress"

Imadi, Sameen Ruqia, Alvina Gul, Murat Dikilitas, Sema Karakas, Iti Sharma e Parvaiz Ahmad. "Water stress". In Water Stress and Crop Plants, 343–55. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119054450.ch21.

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Wickens, Gerald E. "Water Stress". In Ecophysiology of Economic Plants in Arid and Semi-Arid Lands, 111–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-03700-3_5.

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Mckersie, Bryan D., e Ya’acov Y. Leshem. "Water and drought stress". In Stress and Stress Coping in Cultivated Plants, 148–80. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-017-3093-8_7.

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Rejeb, Kilani Ben, Maali Benzarti, Ahmed Debez, Arnould Savouré e Chedly Abdelly. "Water stress in plants". In Water Stress and Crop Plants, 142–49. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781119054450.ch10.

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Waller, Peter, e Muluneh Yitayew. "Water and Salinity Stress". In Irrigation and Drainage Engineering, 51–65. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-05699-9_4.

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Adeel, Zafar. "Water Stress and Scarcity". In Routledge Handbook of Water and Development, 229–40. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003095545-26.

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McNabb, David E., e Carl R. Swenson. "Water Stress in New England". In America’s Water Crises, 315–29. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-27380-3_16.

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du Plessis, Anja. "Current and Future Water Scarcity and Stress". In Springer Water, 13–25. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-03186-2_2.

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Murata, Yoshiyuki, e Izumi C. Mori. "Stomatal regulation of plant water status". In Plant Abiotic Stress, 47–67. Hoboken, NJ: John Wiley & Sons, Inc, 2014. http://dx.doi.org/10.1002/9781118764374.ch3.

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Ondrasek, Gabrijel. "Water Scarcity and Water Stress in Agriculture". In Physiological Mechanisms and Adaptation Strategies in Plants Under Changing Environment, 75–96. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-8591-9_4.

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Atti di convegni sul tema "Water stress"

Rogers, S. A. "Fatigue Cracking Of Cooling Water Pipes". In Stress and Vibration: Recent Developments in Measurement and Analysis, a cura di Peter Stanley. SPIE, 1989. http://dx.doi.org/10.1117/12.952912.

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Walski, Thomas, Bryce Edwards, Emil Helfer e Brian E. Whitman. "Scouring Stress for Large Solids". In World Environmental and Water Resources Congress 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41114(371)422.

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Brandt, Sara, Richard M. Vogel e Stacey Archfield. "Indicators of Hydrologic Stress in Massachusetts". In World Environmental and Water Resources Congress 2008. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40976(316)536.

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Mohammadi, Mirali. "Boundary Shear Stress around Bridge Piers". In World Water and Environmental Resources Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40569(2001)255.

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Taguchi, M., K. Maeda e J. Aoyama. "Improvement of filling capability by control of water outgassing from via holes in high-pressure aluminum reflow technology". In STRESS INDUCED PHENOMENA IN METALLIZATION. ASCE, 1998. http://dx.doi.org/10.1063/1.54662.

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Barek, Viliam, Jan Horak, Dusan Igaz, Oliver Obrocnik e Vladimir Kiss. "STRATEGIES FOR MONITORING PLANT WATER STRESS". In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/3.1/s13.33.

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One of the main lines of research on the impact of climate change is the study of drought and its effects on agricultural production. The aim of this study is to determine the key parameter of plant expression in relation to water stress and soil hydrophysical properties, thereby more accurately determining the need for real-time soil profile water enhancement. The research was conducted from 2019 to 2021 at the Nove Zamky experimental site, with research on royal walnut (Juglans regia L.) During the study, we closely monitored changes in branch and stem diameters of the plants using DD-S dendrometers (Ecomatic), sap flow rate was monitored using the Dynagage Trunk Gages system (Dynamax), and leaf spectral response was measured using the ASD system (FieldSpec). The values obtained were then compared with soil moisture, rainfall and air temperature data for the two irrigation treatments. The effect of water stress in the nonirrigated variants is not only to change the intensity of biomass growth in stems and branches, but also to reduce the volume of existing tissue. This change is also closely linked to changes in sap flow rate, which was also statistically confirmed in this study. Water stress reduces water uptake by the roots and decreases the sap flow rate; the tissue in the stems and branches becomes insufficiently hydrated, leading to less diameter growth than in the case of irrigated plants.

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Leishear, Robert A. "Dynamic Pipe Stresses During Water Hammer: III — Complex Stress Relationships". In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1273.

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Complex three-dimensional dynamic stresses occur in a pipe following a water hammer event. Equations from vibration theory were adapted for use to describe the dynamic stresses at any point along the pipe wall. Hoop, radial, and axial dynamic stress equations are presented to approximate the stresses at a point on the pipe wall. Dynamic stress equations for beams and other simple shapes are also considered. The dynamic pipe stresses are affected principally by the types of water hammer waves or fluid transients, by the wave impacts at elbows or tees, and by the reflections of the waves from these elbows or tees. The three fluid transients considered are a moving step pressure wave, a ramp pressure, and a moving pressure spike. Approximate techniques are presented for evaluating the effects on piping due to the impingement of these transients on an elbow. For an equivalent pressure in a long pipe, application of the step pressure created the largest stress increases of the three transients considered. The vibration equations also prompt a solution to reduce water hammer effects. To this end, slow closing valves are frequently employed. Vibration theory may be applied to quantify the stress reductions afforded by these valves. Pipe stress equations may be manipulated to reduce pipe stresses for a linearly increasing, or ramp, pressure wave traveling along the pipe.

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Nemoto, K. "Evaluation of Fluid Flow Path in a Single Fracture Undergoing Normal Stress and Shear Offset". In WATER DYANMICS: 3rd International Workshop on Water Dynamics. AIP, 2006. http://dx.doi.org/10.1063/1.2207095.

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Swanson, Matthew, e Tom Goodell. "Overcoming high temperature water ingress in deep shaft mining". In Seventh International Conference on Deep and High Stress Mining. Australian Centre for Geomechanics, Perth, 2014. http://dx.doi.org/10.36487/acg_rep/1410_53_swanson.

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"A NOVEL APPROACH TO ALPHA ACTIVITY TRAINING USING WATER BASED ELECTRODES". In Special Session on Biofeedback Systems for Stress Reduction. SciTePress - Science and and Technology Publications, 2012. http://dx.doi.org/10.5220/0003888904810486.

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Rapporti di organizzazioni sul tema "Water stress"

Joyce, Brian, e Doreen Salazar. New WEAP PlugIn calculates water stress, disaggregated by sub-basin. Stockholm Environment Institute, dicembre 2023. http://dx.doi.org/10.51414/sei2023.062.

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Riemenschneider, Don E. Water Stress Promotes Early Flowering in Jack Pine. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station, 1985. http://dx.doi.org/10.2737/nc-rn-331.

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Jones, R. H., e S. M. Bruemmer. Assessment of stress-corrosion cracking in a water-cooled ITER. Office of Scientific and Technical Information (OSTI), aprile 1989. http://dx.doi.org/10.2172/6298660.

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Ganguly, Auroop R., Poulomi Ganguli e Devashish Kumar. Water Stress on U.S. Power Production at Decadal Time Horizons. Office of Scientific and Technical Information (OSTI), settembre 2014. http://dx.doi.org/10.2172/1339441.

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Hunter, Kelsey Anne, e Richard Middleton. Offsetting Water Requirements and Stress with Enhanced Water Recovery from CO₂ Storage. Office of Scientific and Technical Information (OSTI), agosto 2016. http://dx.doi.org/10.2172/1296700.

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Hunter, Kelsey Anne. Offsetting Water Requirements and Stress with Enhanced Water Recovery from CO₂ Storage. Office of Scientific and Technical Information (OSTI), agosto 2016. http://dx.doi.org/10.2172/1296706.

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Mukundan, Rangachary. Accelerated Stress Test (AST) Development for Advanced Liquid Alkaline Water Electrolysis. Office of Scientific and Technical Information (OSTI), febbraio 2022. http://dx.doi.org/10.2172/1844102.

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Feng, Kuishuang, e Xiangjie Chen. Water and Land Stress in Bolivia, Colombia, Ecuador, and Peru under Coupled Climate-Socioeconomic Scenarios. Inter-American Development Bank, settembre 2023. http://dx.doi.org/10.18235/0005144.

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How to keep water and land stress within planetary boundaries is a major challenge for sustainable development in Latin American countries. Using a global multi-regional input-output analysis (GMRIO) approach, this study simulates the future land and water demand for Peru, Bolivia, Ecuador, and Colombia under three climate-socioeconomic scenarios: SSP1-RCP2.6, SSP2-RCP4.5, and SSP5-RCP8.5. Under all three scenarios, land and water demand in all four countries are projected to increase rapidly in the next few decades. By 2050, the demand for cropland in Peru and Bolivia will exceed their planetary boundaries and the rise in income will be the most significant contributor to the rising demand. In addition, foreign demand will significantly drive the growth of both water and land demand in Ecuador and land demand in Colombia. Non-agricultural sectors (e.g., the mining sector in the latter) will be primarily responsible for the increased water demand in Ecuador and Peru, exacerbating competition between those sectors and the agricultural sector for water. In Peru and Bolivia, there is a significant spatial mismatch of water and land resources at the basin level. With hydraulic infrastructure as a prerequisite, developing irrigated agriculture may lead to a water-land trade-off that will significantly alleviate the land stress in Peru and Bolivia.

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Mosquna, Assaf, e Sean Cutler. Systematic analyses of the roles of Solanum Lycopersicum ABA receptors in environmental stress and development. United States Department of Agriculture, gennaio 2016. http://dx.doi.org/10.32747/2016.7604266.bard.

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Drought and other abiotic stresses have major negative effects on agricultural productivity. The plant hormone abscisic acid (ABA) regulates many responses to environmental stresses and can be used to improve crop performance under stress. ABA levels rise in response to diverse abiotic stresses to coordinate physiological and metabolic responses that help plants survive stressful environments. In all land plants, ABA receptors are responsible for initiating a signaling cascade that leads to stomata closure, growth arrest and large-scale changes in transcript levels required for stress tolerance. We wanted to test the meaning of root derived ABA signaling in drying soil on water balance. To this end we generated transgenic tomato lines in which ABA signaling is initiated by a synthetic agonist- mandipropamid. Initial study using a Series of grafting experiments indicate that that root ABA signaling has no effect on the immediate regulation of stomata aperture. Once concluded, these experiments will enable us to systematically dissect the physiological role of root-shoot interaction in maintaining the water balance in plants and provide new tools for targeted improvement of abiotic stress tolerance in crop plants.

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Dixit, A., A. Pokhrel, D. R. Rai, K. Dixit e M. Upadhya. Living with Water Stress in the Hills of the Koshi Basin, Nepal. Kathmandu, Nepal: International Centre for Integrated Mountain Development (ICIMOD), 2009. http://dx.doi.org/10.53055/icimod.508.

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