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Dissertations / Theses on the topic 'Stomatal conductance'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Matsumoto, Kazuho, Takeshi Ohta, and Takafumi Tanaka. "Dependence of stomatal conductance on leaf chlorophyll concentration and meteorological variables." Elsevier, 2005. http://hdl.handle.net/2237/6964.

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2

Dumont, Jennifer. "Rôle de la régulation stomatique et de la capacité de détoxication foliaire dans l'estimation d'un seuil de risque à l'ozone pour la végétation." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0022/document.

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L'ozone troposphérique est un polluant atmosphérique majeur qui agit comme une phytotoxine. Il pénètre dans les feuilles par les stomates avant d'être dissout dans l'apoplaste en générant des radicaux libres oxygénés (ROS) provoquant ainsi un stress oxydatif. Deux barrières existent pour restreindre les effets de l'ozone : (i) les stomates qui peuvent limiter les flux entrants par contrôle de la conductance stomatique et (ii) le système de détoxication des ROS issus de la dégradation de l'ozone. Nous avons étudié les effets de l'ozone (120 ppb) sur ces deux moyens de défense chez trois génotyp

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3

Cornish, Katrina, Phenmin Lu, John W. Radin, Edgar L. Turcotte, and Eduardo Zeiger. "Photosynthetic Rate and Stomatal Conductance are Related to Heat Tolerance in Pima Cotton." College of Agriculture, University of Arizona (Tucson, AZ), 1991. http://hdl.handle.net/10150/208325.

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Breeding for high yield in hot environments (heat tolerance) has tripled the yield of Pirna cotton since 1949. We compared six strains (one primitive non-cultivated line, four cultivars representing advancing stages in the breeding process, and one unreleased advanced line) for their gas exchange properties in the greenhouse. Both photosynthetic rate and stomatal conductance increased with improving genetic yield potential. Photosynthetic rate was enhanced more in the morning than in the afternoon. Stomatal conductance did not limit photosynthesis; rather, the changes resulted from alterations

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4

Miranda, Barradas Victor Luis. "Responses to leaf microenvironment dynamics : their implications for photosynthesis and transpiration." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260603.

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5

Ramos, Antônio Mário de Torres. "O papel da histerese no comportamento complexo da condutância estomática." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-06102014-135524/.

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Estômatos são poros responsáveis pela troca gasosa entre a folha e o meio externo. A partir da década de 80, experimentos revelaram um complexo padrão espaço temporal na abertura e fechamento dos estômatos. As experiências apontam para uma possível coordenação entre estômatos em algumas áreas da folha chamada de patches. Esse fenômeno é conhecido na literatura como patchy stomatal conductance. Frequentemente a coordenação dinâmica dos estômatos está associada à oscilações temporais na condutãncia estomática (média especial da abertura dos estômatos). Em 1997 Haefner, Buckley e Mott (HBM) publi

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6

Sakoda, Kazuma. "Physiological and Genetic Factors for High Leaf Photosynthetic Capacity in Soybean (Glycine max (L.) Merr.)." Kyoto University, 2019. http://hdl.handle.net/2433/242682.

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7

Wehr, Richard, Róisín Commane, J. William Munger, et al. "Dynamics of canopy stomatal conductance, transpiration, and evaporation in a temperate deciduous forest, validated by carbonyl sulfide uptake." COPERNICUS GESELLSCHAFT MBH, 2017. http://hdl.handle.net/10150/623091.

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Stomatal conductance influences both photosynthesis and transpiration, thereby coupling the carbon and water cycles and affecting surface–atmosphere energy exchange. The environmental response of stomatal conductance has been measured mainly on the leaf scale, and theoretical canopy models are relied on to upscale stomatal conductance for application in terrestrial ecosystem models and climate prediction. Here we estimate stomatal conductance and associated transpiration in a temperate deciduous forest directly on the canopy scale via two independent approaches: (i) from heat and water vapor e

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8

Rzigui, Touhami. "Analyse de la réponse d’un mutant mitochondrial de Nicotiana sylvestris au manque d’eau." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112144/document.

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Pour étudier le rôle de la mitochondrie dans la tolérance à la sécheresse, la réponse à la contrainte hydrique a été comparée entre une lignée sauvage (WT) et un mutant CMSII (Cytoplasmic Male Sterile) de Nicotiana sylvestris. Chez le mutant CMSII, le complexe I mitochondrial est absent et la respiration est assurée par les NAD(P)H déshydrogénases alternes et elle est maintenue à un niveau supérieur de l’ordre de 20 à 30% à celui du WT. La différence observée entre les plantes WT et CMSII met en jeu non seulement le fonctionnement mitochondrial, mais également le fonctionnement des chloroplast

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9

Nwugo, Chika Charles. "Physiological and Molecular Studies on Silicon-Induced Cadmium Tolerance in Rice (Oryza sativa L.)." Oxford, Ohio : Miami University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1216779093.

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10

Vialet-Chabrand, Silvère. "Modélisation des variations journalières de la conductance stomatique : apport d'une approche dynamique et conséquences sur l'efficience intrinsèque d'utilisation de l'eau chez le chêne." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0146/document.

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L'efficience intrinsèque d'utilisation de l'eau (Wi) définit comme le rapport de l'assimilation nette de CO2 (A) sur la conductance stomatique à la vapeur d'eau (gs) est un estimateur au niveau foliaire du compromis fait par la plante entre l'accumulation de biomasse et sa consommation en eau. De nombreuses études ont révélé une forte diversité inter et intra-spécifique de ce trait intégré dans le temps dont l'origine est encore mal connue. Les travaux réalisés sur les variations journalières de A et gs ont jusqu'à maintenant révélé un rôle plus important de la diversité de gs dans la diversit

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11

Martorell, Lliteras Sebastià. "Understanding the regulation of leaf and plant gas Exchange under water stress with a process-based model of stomatal conductance." Doctoral thesis, Universitat de les Illes Balears, 2014. http://hdl.handle.net/10803/288210.

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Water availability is one of the biggest constraints limiting the plant growth and species distribution around the world. This is the case in the Mediterranean region where, moreover, the frequency and amount of rainfall will decrease due to global warming. This will provoke longer periods of drought and a general decrease of water availability. In this context, one of the most vulnerable crops is grapevine. This crop has been traditionally rain-feed, although in recent years it’s becoming an irrigated crop. This increases the demand to regulate the water use by more precise irrigation

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12

Elamri, Yassin. "Bilan hydrique et développement de culture sous panneaux photovoltaïques dynamiques : de la modélisation à l’évaluation de solutions agrivoltaïques." Thesis, Montpellier, SupAgro, 2017. http://www.theses.fr/2017NSAM0049.

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L’agrivoltaïque, association sur une même surface d’une production agricole et d’une production d’énergie d’origine photovoltaïque, apparait aujourd’hui comme une solution innovante pour atténuer les effets du changement climatique, notamment sur le secteur agricole. Déjà imaginé en 1982, les premières expérimentations débutées à Montpellier (France) en 2010 ont montré la pertinence de cette association à travers un maintien des rendements sous certaines conditions, une meilleure efficience d’utilisation du sol ainsi qu’une diminution de la consommation en eau des cultures sous ombrage. Suite

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13

Büker, Patrick [Verfasser], and Willy [Akademischer Betreuer] Werner. "Development of a stomatal conductance model for white clover and its application for ozone flux predictions / Patrick Büker ; Betreuer: Willy Werner." Trier : Universität Trier, 2010. http://d-nb.info/1197696423/34.

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14

Szejner, Paul, William E. Wright, Flurin Babst, et al. "Latitudinal gradients in tree ring stable carbon and oxygen isotopes reveal differential climate influences of the North American Monsoon System." AMER GEOPHYSICAL UNION, 2016. http://hdl.handle.net/10150/621424.

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The arrival of the North American Monsoon System (NAMS) terminates a presummer hyperarid period in the southwestern United States (U.S.), providing summer moisture that is favorable for forest growth. Montane forests in this region rely on winter snowpack to drive much of their growth; the extent to which they use NAMS moisture is uncertain. We addressed this by studying stable carbon and oxygen isotopes in earlywood and latewood from 11 sites along a latitudinal gradient extending from Arizona and New Mexico to Utah. This study provides the first regional perspective on the relative roles of

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15

Hunter, Graham C. "Evaluating Eriogonum Corymbosum Tolerance to Frequent Irrigation and Evaluating Its Significant Morphological Variations for Potential Cultivars." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1725.

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Two separate experiments were designed to assess the value of Lacy Buckwheat (Eriogonum corymbosum ) as a low water landscape plant. Low water use landscapes can contribute to water conservation in arid climates. Developing a palette of plants that are both attractive and drought tolerant can promote the acceptance of low water use landscapes as an alternative to the traditional bluegrass landscapes of the Intermountain West. Eriogonum corymbosum is an attractive subshrub species native to low rainfall areas of the Colorado Plateau. A strip plot design containing four repetitions with four ran

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16

Antunes, Werner Camargos. "Engineering for desiccation postponement: antisense of sucrose transporter in tobacco specifically on guard cells results in reduced stomatal conductance and increased water use efficiency." Universidade Federal de Viçosa, 2009. http://www.locus.ufv.br/handle/123456789/7860.

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Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2016-06-13T16:21:59Z No. of bitstreams: 1 texto completo.pdf: 1075966 bytes, checksum: 047f8bb5c392a3f22d9009ed5f6f71b9 (MD5)<br>Made available in DSpace on 2016-06-13T16:21:59Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1075966 bytes, checksum: 047f8bb5c392a3f22d9009ed5f6f71b9 (MD5) Previous issue date: 2009-07-31<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Nesse trabalho foi avaliada a importância do transportador de sacarose especificamente em células guarda (CG) e o papel da sacarose sobre os

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De, Costa W. A. J. M. "Effects of contrasting water regimes on dry matter production, radiation and water use and stomatal conductance of determinate and indeterminate faba beans (Vicia faba L.)." Thesis, University of Reading, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314724.

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18

DIKOSHI, R. MONGA ILUNGA. "PHYSIOLOGICAL AND ECOLOGICAL DRIVERS AND AGRONOMICAL CONSEQUENCES OF THE OZONE-LIKE SYNDROME IN WHEAT." Doctoral thesis, Università degli Studi di Milano, 2015. http://hdl.handle.net/2434/336262.

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Tropospheric ozone (O3) is known to adversely affect the productivity of a wide range of crops including wheat. However different species, can exhibit different responses to ozone exposure. Since the Triticum genus (wheat) is one of the most cultivated and consumed cereal on the global scale and also considered an O3-sensitive crop, research on its protection against ozone damages can contribute to the improvement of its productivity and thus the worldwide food security. The first part of this research was focused on a varietal screening experiment carried out in 2013 to assess the ozone s

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19

Marrichi, Ana Heloisa Carnaval. "Caracterização da capacidade fotossintética e da condutância estomática em sete clones comerciais de Eucalyptus e seus padrões de resposta ao déficit de pressão de vapor." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-13042009-144513/.

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O estudo caracterizou as variáveis fisiológicas da fotossíntese, em 7 clones de Eucalyptus de alta produtividade, determinando-se as capacidades fotossintéticas máximas (Amax), e o comportamento da fotossíntese (A), condutância (gs) e transpiração (E) em relação ao Déficit de Pressão de Vapor (DPV). Para isso, um ensaio foi instalado em 2004, na ESALQ/USP, contendo os clones do Projeto BEPP (Brasil Eucalyptus Produtividade Potencial), sendo cada parcela composta de 49 plantas (7x7) no espaçamento de 3,0m x 2,7m. Mediram-se as alturas ou DAPs e selecionaram-se 3 árvores médias para as mensuraçõ

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20

Dean, Katie L. "Vertical distribution of soil water use and maintenance of stomatal conductance in the invasive exotic plant Lepidium latifolium in the riparian zone of the Walker River." abstract and full text PDF (UNR users only), 2009. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1472950.

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21

Inman, William W. "Hydraulic resistance a determinant of short term stomatal conductance signaling in disparate xylem anatomy of Red Maple (Acer rubrum L.) and Shumard Oak (Quercus shumardii Buckl.) /." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1181251213/.

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22

Rossdeutsch, Landry. "Contribution du métabolisme de l'ABA et de la conductivité hydraulique à la réponse de la transpiration en situation de contrainte hydrique chez la Vigne : Variabilité génétique et effets du greffage." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0256/document.

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Dans le contexte de changement climatique, la compréhension des mécanismes régissant les pertes en eau de la vigne peut permettre d'adapter le matériel végétal pour maintenir la productivité de la vigne et la qualité du vin. L'adaptation à la sécheresse est un caractère complexe faisant intervenir des mécanismes physiologiques liés aux génotypes du greffon et du porte-greffe. Mais les effets du porte-greffe sur la régulation stomatique du greffon sont mal connus. La production par les racines de signaux chimiques tels que l'ABA et/ou hydraulique pourraient y contribuer. La réponse physiologiqu

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23

Batcho, Elie. "Proprietes physiologiques de l'acide usnique et applications a la regulation de la transpiration vegetale." Paris 7, 1988. http://www.theses.fr/1988PA077008.

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Ce travail est consacre a la recherche d'un antitranspirant vegetal non synthetique. Les investigations menees du laboratoire au champ (agriculture et sylviculture) ont pour objectif l'augmentation de l'efficience de l'eau en zone sub-aride. Le principe d'action recherche est la reduction de l'etr par action sur la transpiration stomatique. L'importance du role de la pompe h**(+)/k**(+) sur le mouvement stomatique a oriente ce travail vers les chelateurs naturels. L'acide usnique extrait de divers lichens valide l'hypothese de travail. La purification du produit et l'etude de son activite sur

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Durand, Maxime. "Déterminismes physiologiques, morphologiques et moléculaires de l’efficience d’utilisation de l’eau en lien avec la réponse à la sécheresse chez les peupliers : de la feuille à la plante entière." Thesis, Université de Lorraine, 2019. http://www.theses.fr/2019LORR0082.

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Il est prévu une augmentation de l’intensité et de la fréquence des sécheresses dans les années à venir à cause des changements climatiques. Puisque la productivité des peupliers est étroitement liée à la disponibilité en eau, il existe un risque de déclin de la production de bois dans les peupleraies. L’optimisation de la biomasse produite en regard de l’eau consommée (efficience d’utilisation de l’eau, WUE) apparaît alors être une question de recherche prometteuse. Des études précédentes ont montré une diversité clonale de WUE chez les peupliers, pilotée principalement par la conductance sto

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25

Issoufou, Hassane Bil-Assanou. "Réponse hydrique à la sécheresse et impact de la coupe chez une espèce semi-sempervirente sahélienne (Guiera senegalensis J.F.Gmel)." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20091/document.

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La zone sahélienne a connu une baisse des précipitations et d’importants changements d'utilisation des terres ces dernières décennies qui ont conduit à une forte régression du couvert ligneux. Pourtant, Guiera senegalesis J.F. Gmel est une Combretaceae semi-sempervirente, dont la dominance s'est accrue avec la pression agricole dans la bande soudano-sahélienne où elle joue un rôle socio-économique et agroforestier important. Elle constitue donc un bon modèle pour étudier les réponses hydriques du couvert ligneux actuel à la sécheresse et les modifications de ces réponses sous l'effet de la cou

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Ocheltree, Troy W. "Growth and survival during drought: the link between hydraulic architecture and drought tolerance in grasses." Diss., Kansas State University, 2012. http://hdl.handle.net/2097/13803.

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Doctor of Philosophy<br>Department of Agronomy<br>P.V. Vara Prasad<br>The pathway for the movement of water through plants, from the soil matrix to the atmosphere, constitutes the hydraulic architecture of a plant. The linkage between the hydraulic architecture of woody plants and drought tolerance has received considerable attention, but much less work has been done on grasses. I investigated the linkage between the hydraulic architecture of grasses to physiological patterns of water use across a range of species and conditions. The rate of stomatal conductance (g[subscript]s) and photosyn

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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 (

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Schley, Thayssa Rabelo. "Intensidade do estresse hídrico modula a expressão de aquaporinas durante a reidratação em Sorghum bicolor." Botucatu, 2016. http://hdl.handle.net/11449/138029.

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Orientador: Luiz Fernando Rolim Almeida<br>Resumo: Espera-se que os efeitos da seca aumentem e alterem a duração do estresse hídrico nos próximos anos em diferentes regiões agrícolas. A recuperação fisiológica após o estresse hídrico ainda não é compreendida e as aquaporinas (AQPs) participam do processo de recuperação. Nosso objetivo foi avaliar se as aquaporinas estão associadas com o processo de recuperação fisiológica nas folhas após a reidratação. Plantas de Sorghum bicolor L. (Moench) foram submetidas a diferentes intensidades de estresse hídrico durante 20 dias e posterior reidratação d

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Tomczak, Valmor Elias. "Ecofisiologia de mudas de ipê-roxo (Tabebuia impetiginosa Mart. ex. DC. Standal.) submetidas a estresse hídrico." Universidade Federal Rural do Semi-Árido, 2012. http://bdtd.ufersa.edu.br:80/tede/handle/tede/54.

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Made available in DSpace on 2016-08-12T19:15:20Z (GMT). No. of bitstreams: 1 ValmorET_DISSERT.pdf: 1152615 bytes, checksum: db476e005af6cccba35d383e70cb2af7 (MD5) Previous issue date: 2012-03-14<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Tabebuia impetiginosa is a tree species, known as pau d'arco or ipe-roxo. It is found in Caatinga areas, and is of great importance to this biome, its wood is much appreciated, and because it contains in its bark substances that act against cancer. This species has been used in land restoration programs. Species of this biome, such as

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Krauss, Lauren Marie. "Balancing the Water Budget: the effect of plant functional type on infiltration to harvest ratios in stormwater bioretention cells." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/101970.

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Stormwater bioretention cells (BRCs) are a variety of green stormwater infrastructure with the potential to restore pre-urban water balance, provided they can be tailored to infiltrate and evapotranspire (i.e., harvest) urban runoff in proportions consistent with pre-urban hydrologic conditions. This paper evaluates their capacity to do so, focusing on evapotranspirative harvest, which is relatively understudied, and the capacity of CSR (Competitve, Stress-tolerant, and Ruderal) functional type to serve as an overarching framework characterizing the water use strategy of BRC plants. The goal i

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François, Ticiana. "RELAÇÕES HÍDRICAS E TROCAS GASOSAS EM PLANTAS DE FEIJÃO SUBMETIDAS À IRRIGAÇÃO DEFICITÁRIA." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/7555.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The constant deficiency of available water resources and the society pressure for the rational water use in agriculture requires the correct management of the irrigation water. When a plant does not receive the right amount of water, it will affect the crop yield. The deficit irrigation contributes to increase the crops yield, comparing to a systems without irrigation, and as a results the agriculture will be more efficient preserving the quality ant quantity of natural recourses increasing or maintaining the crop yield. Therefore,

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Lindeque, Susan. "Influence of SO2 fumigation on growth, photosynthesis, lipoxygenase and peroxidase activities of soybean (Glycine max), in open-top chambers / Susan Lindeque." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8716.

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Air pollutant exposure poses a health risk to humans and impacts negatively on agriculture. High levels of air pollution resulted in extensive crop damage and yield reduction in Europe and USA. The Highveld region in South Africa, a very important area for maize and soya production, has already been declared an air pollution hot spot, with SO2 being the most concerning air pollutant. Most of the SO2 over the Highveld originates from the burning of coal for power generation. Developing countries, such as South Africa, are highly dependent on agriculture for food security and high levels of air

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Lindsey, Alexander Joseph. "Agronomic and Physiological Responses of Modern Drought-Tolerant Maize (Zea mays L.) Hybrids to Agronomic Production Practices." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1428654442.

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Volpe, Valeria. "On Some Ecohydrological Interactions in Coastal Environments." Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3422052.

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The modeling of coupled processes of plant transpiration and photosynthesis together with soil moisture dynamics and morphology evolution is of key importance to study the fate of coastal areas, characterized by shallow waters and complex hydraulic regimes which regulate the sediment budget and salinity. In this study, a novel approach to physically-based models which deal with water potential gradients is presented, based on plant stomatal optimization which aims to increase photosynthesis and minimize transpiration, for a cost parameter which depends on the local soil moisture. Such an appr

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Durand, Maxime. "Déterminismes physiologiques, morphologiques et moléculaires de l’efficience d’utilisation de l’eau en lien avec la réponse à la sécheresse chez les peupliers : de la feuille à la plante entière." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0082.

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Il est prévu une augmentation de l’intensité et de la fréquence des sécheresses dans les années à venir à cause des changements climatiques. Puisque la productivité des peupliers est étroitement liée à la disponibilité en eau, il existe un risque de déclin de la production de bois dans les peupleraies. L’optimisation de la biomasse produite en regard de l’eau consommée (efficience d’utilisation de l’eau, WUE) apparaît alors être une question de recherche prometteuse. Des études précédentes ont montré une diversité clonale de WUE chez les peupliers, pilotée principalement par la conductance sto

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Jinagool, Wanploy. "Variabilité génétique de la tolérance à la sécheresse d'arbres d'intérêts agronomiques : rôle de la vulnérabilité à la cavitation du xylème." Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22575/document.

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Dans un contexte de changements climatiques, le stress hydrique et la gestion de l'eau sont considérés comme une contrainte importante pour le secteur agricole. Ainsi la sélection pour la tolérance à la sécheresse est devenue un objectif majeur pour de nombreux programmes de sélection. La vulnérabilité à la cavitation est considérée comme un trait d'intérêt pour la sélection à une sécheresse extrême, en particulier pour les plantes ligneuses. Pourtant, l'étendue de sa variabilité et sa relation avec la tolérance à la sécheresse sont mal documentées à l’échelle intra-spécifique, et en particuli

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Silva, Cláudio Ricardo da. "Evapotranspiração e desenvolvimento de limeira ácida 'Tahiti' na ausência e presença de estresse hídrico." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-27092005-152323/.

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As relações hídricas e fisiológicas em plantas de lima ácida Tahiti sob estresse hídrico foram estudadas tendo-se como principais objetivos: (a) verificar a sazonalidade da evapotranspiração e o coeficiente de cultivo com o uso de lisímetro de pesagem baseado em célula de carga eletrônica, (b) determinar o limite crítico da água disponível em função da evapotranspiração, trocas gasosas e potencial de água na folha durante um período de estresse hídrico e (c) avaliar o efeito da supressão da irrigação durante diferentes períodos fenológicos sobre o desenvolvimento vegetativo, na produtividade

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Carneiro, Rafaela Lorenzato. "Caracterização da capacidade fotossintética e da condutância estomática em árvores de Pinus caribaea var. hondurensis e de Pinus taeda em Itatinga, São Paulo." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-10092013-170745/.

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Realizaram-se campanhas em árvores de cinco anos de idade de Pinus caribaea var. hondurensis e Pinus taeda em parcelas controle (sem fertilização e sem irrigação) e parcelas fertilizadas e irrigadas, durante o verão e o inverno de 2012 visando caracterizar as seguintes variáveis fisiológicas: i) Capacidade máxima fotossintética (Amax); ii) Fotossíntese ao longo do dia (A); iii) Variação da condutância estomática (gs) em relação ao aumento do déficit de pressão de vapor (DPV); e iv) Taxas máximas de carboxilização (Vcmax) e de transporte de elétrons (Jmax) via curvas A/Ci. O estudo foi realizad

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Neves, Ademir Diniz. "Estimativa do nível de dano de Orthezia praelonga Douglas, 1891 e de Leucoptera coffeella (Guérin-Mèneville, 1842) por varíaveis fisiológicas vegetais." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-26042005-150817/.

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O objetivo do trabalho foi avaliar, por meio de variáveis fisiológicas vegetais como fotossíntese, condutância estomática, transpiração foliar, concentração interna de CO2 e temperatura foliar, o efeito de insetos pragas de diferentes hábitos alimentares em suas plantas hospedeiras. Foram estimados os níveis de dano de um sugador, Orthezia praelonga Douglas, 1891, em limão cravo (Citrus limonia L.), e de Leucoptera coffeella (Guérin-Mènevile, 1842), um mastigador, em mudas de café 'Obatã'. Os ensaios foram realizados em condições ótimas de temperatura, com luz e CO2 saturantes, e diferentes po

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Lima, Mayky Francley Pereira de. "Ecofisiologia de espécies de plantas daninhas submetidas a estresse hídrico e à reidratação." Universidade Federal Rural do Semi-Árido, 2015. http://bdtd.ufersa.edu.br:80/tede/handle/tede/92.

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Made available in DSpace on 2016-08-12T19:15:30Z (GMT). No. of bitstreams: 1 MaykyFPL_Dissert.pdf: 583480 bytes, checksum: b5156cac19b83224804fef6b4df642d2 (MD5) Previous issue date: 2015-02-23<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>There is no doubt that the effect of weed causes damage to various human activities and especially those for agricultural use. Therefore, if not properly handled, can reduce productivity and production quality due to competition for light, nutrients, and especially water, which is the most abundant resource, while the most limiting to

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Ayyaru, Thevar Prasanna. "Determining transpiration efficiency of eight grain sorghum lines [Sorghum bicolor (L.) Moench]." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/1094.

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Pace, Brian A. "Physiology, Photochemistry, and Fitness of Mexican Maize Landraces in the Field." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1545421491370678.

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Bulegon, Lucas Guilherme. "Relações hídricas, trocas gasosas e atividade enzimática de Urochloa ruziziensis inoculada com Azospirillum brasilense, sob déficit hídrico." Universidade Estadual do Oeste do Paraná, 2016. http://tede.unioeste.br:8080/tede/handle/tede/1300.

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Made available in DSpace on 2017-07-10T17:37:13Z (GMT). No. of bitstreams: 1 Lucas Guilherme Bulegon.pdf: 2078794 bytes, checksum: ccb242a3255f730bf9153212913cc026 (MD5) Previous issue date: 2016-02-19<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The water deficit causes the plant physiological and biochemical disarray, so is sought ways to reduce these effects and increase the tolerance of plants to water stress. Thus, the present study aimed to evaluate the physiological behavior and biochemical Urochloa ruziziensis inoculated with Azospirillum brasilense via seed an

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Pfeiffer, Steven S. "Effects of Lonicera maackii on soil water content and tree seedlings in eastern deciduous forest." Miami University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1375221589.

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Akgul, Alper. "Performance of slash pine (Pinus elliottii Engelm.) containerized rooted cuttings and bare-root seedlings established on five planting dates in the flatlands of western Louisiana." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/2230.

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The forest product industry is keenly interested in extending the normal planting season, as well as in the comparative field performance of standard nursery bare-root seedlings and containerized rooted cuttings. The effect of seasonal planting dates on survival, above and belowground biomass allocation, water relations, gas exchange attributes and foliar carbon isotope composition (δ13C) of two stock types of slash pine (Pinus elliottii Engelm.) were examined. Slash pine bare-root seedlings (BRS) and containerized rooted cuttings (CRC) were hand planted in September, November, January, March

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Cottee, Nicola Sandra. "Thermotolerance of cotton." Thesis, The University of Sydney, 2009. http://hdl.handle.net/2123/5428.

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The Australian cotton industry has developed high yielding and high quality fibre production systems and attributes a significant contribution of this achievement to highly innovative breeding programs, specifically focused on the production of premium quality lint for the export market. Breeding programs have recently shifted attention to the development of new germplasm with superior stress tolerance to minimise yield losses attributed to adverse environmental conditions and inputs such as irrigation, fertilisers and pesticides. Various contributors to yield, such as physiology, biochemistry

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Cottee, Nicola Sandra. "Thermotolerance of cotton." University of Sydney, 2009. http://hdl.handle.net/2123/5428.

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Doctor of Philosophy (PhD)<br>The Australian cotton industry has developed high yielding and high quality fibre production systems and attributes a significant contribution of this achievement to highly innovative breeding programs, specifically focused on the production of premium quality lint for the export market. Breeding programs have recently shifted attention to the development of new germplasm with superior stress tolerance to minimise yield losses attributed to adverse environmental conditions and inputs such as irrigation, fertilisers and pesticides. Various contributors to yield, su

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Laclau, Patricia Renee Françoise Battie. "Efeitos da adubação potássica sobre a adaptação à seca do Eucalyptus grandis." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/64/64134/tde-16012014-160920/.

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Com a continuação do aquecimento global, prevê-se o aumento dos períodos de seca, um dos mais importantes fatores abióticos a afetar o crescimento dos eucaliptos no Brasil. Nessa direção, as práticas silviculturais poderiam adaptar-se para favorecer os mecanismos de adaptação das árvores à seca. Assim, na Estação Experimental de Itatinga, foram avaliados os efeitos da adubação potássica sobre os aspectos produtivos e fisiológicos de um povoamento de Eucalyptus grandis, em primeira rotação, submetido à exclusão parcial de chuva durante trinta meses após o plantio. O dispositivo experimental foi

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Haghighi, Maryam, Atena Sheibanirad, and Mohammad Pessarakli. "Effects Of Selenium as a Beneficial Element on Growth and Photosynthetic Attributes of Greenhouse Cucumber." Taylor & Francis, 2015. http://hdl.handle.net/10150/615120.

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Selenium (Se) is an essential element for human and livestock with antioxidant and anticancer characteristics. Although Se is not an essential element for plants, it has been reported that it can improve plant growth. This experiment was conducted at the Isfahan University of Technology in winter 2010. The experiment was factorial based on a completely randomized design (CRD) with 4 replications. Se was added to nutrient solution in 4 concentrations 2, 4, and 6 mg/l sodium selenite (Na2SeO3). Root volume, fresh and dry weights of shoots and roots, number and weight of fruits, chlorophyll conte

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Martineau, Elsa. "Rôle joué par le potassium dans la réponse au déficit hydrique du maïs (Zea mays L.) : des mécanismes physiologiques au fonctionnement intégré du peuplement." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0286/document.

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Le potassium (K) est un élément majeur connu pour contribuer à la résistance des plantes à la sècheresse. L'étudede son influence sur la réponse physiologique du maïs (Zea mays L.) sous contrainte hydrique est essentiellepour prédire la future productivité dans un contexte de changements climatiques, en particulier de la diminutiondes précipitations. Des modalités d'apports en K et en eau ont été croisées et soumises à des plants de maïs,élevés en condition contrôlées ou cultivés au champ. La croissance (biomasses aériennes et racinaires,rendements en grain) ainsi que les mécanismes écophysiol

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