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	Provedor de dados Braz. J. Plant Physiol. (6) Colegio de Postgraduados (4) BABT (3) Bragantia (2) Ciência Rural (2) Ciencia e Investigación Agraria (1) Rev. Ciênc. Agron. (1) Acta Botanica (1) Biocell (1) Scientia Agricola (1) Rev. Bras. Bot. (1) Rev. Bras. Ciênc. Solo (1) AGRIAMBI (1) Mais... Autor Castro,Paulo Roberto de Camargo e (2) Chamú Baranda, Juan Antonio (2) Costa,Paulo Henrique Alves da (2) Lacerda,Claudivan Feitosa de (2) Ramírez Guerrero, Leobarda Guadalupe (2) Sena,José Ozinaldo Alves de (2) Silva,José Vieira (2) Zaidan,Humberto Actis (2) Agudelo,Agatha (1) Azevedo Neto,André Dias de (1) Ballestrini,Caín (1) Batista,Gisele Sales (1) Bertolli,Suzana Chiari (1) Busso,Carlos A. (1) Campostrini,Eliemar (1) Carvajal,Micaela (1) Catuchi,Tiago Aranda (1) Cruz,Adiel F. da S. (1) Dias,Frederico Alcântara Novelli (1) Dillenburg,Lúcia Rebello (1) Mais... Palavra-chave Water relations (25) Relaciones hídricas (4) Salt stress (4) Gas exchange (3) Salinity (3) Aguacate (2) Anatomy of roots (2) Anatomía de raíz (2) Avocado (2) Capsicum annuum L. (2) Doctorado (2) Eficiencia en el uso del agua (2) Ejes embrionarios (2) Embryonic axes (2) Estrés salino (2) Fruticultura (2) Hidrociencias (2) Intercambio de gases (2) Maestría (2) Photosynthesis (2) Mais... Tipo do documento Info:eu-repo/semantics/article (20) Journal article (1) Ano 2020 (2) 2018 (2) 2016 (1) 2015 (1) 2013 (1) 2012 (1) 2011 (2) 2010 (5) 2008 (1) 2007 (3) 2006 (1) 2004 (1) 2003 (1) 2002 (1) 1999 (1) 1998 (1) Mais... País Brazil (19) Mexico (4) Argentina (1) Chile (1) Idioma Inglês (20) Espanhol (4) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 25 Primeira ... 1 2 ... Última A method to improve leaf succulence quantification BABT Mantovani,André. Leaf succulence has important physiological and ecological implications. Currently it is quantified by Delf's index (fresh weight/leaf area) and fresh weight/ dry weight ratio. Both indeces are reconsidered and a new index is proposed. Shade and sun leaves from terrestrial, hemiepiphytic and epiphytic aroids were studied. Delf's formula, which does not consider dry weight, overestimated leaf succulence. As fresh weight / dry weight ratio (fw / dw) does not consider leaf area, plants with the same fw / dw ratio were more than five times different in area. The last case was only possible with a decrease in surface / volume ratio and a increase of mesophyll thickness, components not measured by fw / dw ratio. The new index proposed here, which takes into... Tipo: Info:eu-repo/semantics/article Palavras-chave: Leaf succulence; Water relations; Leaf anatomy; Araceae; Ecophysiology. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100002 Ecophysiology of papaya: a review Braz. J. Plant Physiol. Campostrini,Eliemar; Glenn,David M.. Papaya (Carica papaya L.) is a principal horticultural crop of tropical and subtropical regions. Knowledge of how papaya responds to environmental factors provides a scientific basis for the development of management strategies to optimize fruit yield and quality. A better understanding of genotypic responses to specific environmental factors will contribute to efficient agricultural zoning and papaya breeding programs. The objective of this review is to present current research knowledge related to the effect of environmental factors and their interaction with the photosynthetic process and whole-plant physiology. This review demonstrates that environmental factors such as light, wind, soil chemical and physical characteristics, temperature, soil water,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Carica papaya; Environmental factors; Photosynthesis; Water relations; Water-use efficiency. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000400010 Effects of salt stress on plant growth, stomatal response and solute accumulation of different maize genotypes Braz. J. Plant Physiol. Azevedo Neto,André Dias de; Prisco,José Tarquinio; Enéas-Filho,Joaquim; Lacerda,Claudivan Feitosa de; Silva,José Vieira; Costa,Paulo Henrique Alves da; Gomes-Filho,Enéas. Seeds from eight different maize genotypes (BR3123, BR5004, BR5011, BR5026, BR5033, CMS50, D766 and ICI8447) were sown in vermiculite, and after germination they were transplanted into nutrient solution or nutrient solution containing 100 mmol.L-1 of NaCl and placed in a greenhouse. During the experimental period plant growth (dry matter, shoot to root dry mass ratio, leaf area, relative growth rate, and net assimilation rate), leaf temperature, stomatal conductance, transpiration, predawn water potential, sodium, potassium, soluble amino acids and soluble carbohydrate contents were determined in both control and salt stressed plants of all genotypes studied. Salt stress reduced plant growth of all genotypes but the genotypes BR5033 and BR5011 were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth analysis; Osmoregulation; Salinity; Transpiration; Zea mays; Water relations. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000100005 Environmental drivers of leaf phenology in trees of the tropical species Ficus obtusifolia Braz. J. Plant Physiol. Ballestrini,Caín; Tezara,Wilmer; Herrera,Ana. Vegetative as well as reproductive phenology of tropical trees frequently occur synchronously at the end of the dry season. It has been repeatedly observed on two individuals of the tropical species Ficus obtusifolia growing in Caracas that they lose their entire foliage in a period of 48 h during the dry season and renew it within the next 72 h. In order to gain knowledge on the mechanisms that govern leaf exchange in F. obtusifolia, we followed in these two individuals the seasonal changes in leaf and fruit phenology, water relations and environmental variables, and in another 25, phenology only. Although foliar exchange was always observed before the rainy season, it also occurred near the end of the rainy season. An increase in leaf turgor potential of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Brevi-deciduous; Day length; Leaf fall; Sap flow velocity; Water relations. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000200003 Growing broccoli under salinity: the influence of cultivar and season on glucosinolates content Scientia Agricola Rios,Juan J.; Agudelo,Agatha; Moreno,Diego A.; Carvajal,Micaela. ABSTRACT: The evaluation of factors that affect glucosinolates (GLS) concentrations in the roots, leaves, and inflorescence of broccoli plants is important in the improvement of the concentration of bioactive compounds and thus in the enhancement of the nutritional properties. In this work, the yield and the concentration of GLS of seven broccoli cultivars (Brassica oleracea var. italica) grown under salinity in field conditions were studied during three different seasons (autumn, winter, and spring). The results show that, generally, salinity did not alter significantly the inflorescence yield during any of the seasons, indicating a high tolerance of the cultivars tested. Yield was reduced only in cultivar Gea in autumn and in cultivar Parthenon in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cinnamoyl-indol-GLS; Water relations; Inflorescence yield; Mineral nutrients. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000601302 Physiological and agronomical responses of Syrah grapevine under protected cultivation Bragantia Souza,Claudia Rita de; Mota,Renata Vieira da; Dias,Frederico Alcântara Novelli; Melo,Evaldo Tadeu de; Pimentel,Rodrigo Meirelles de Azevedo; Souza,Laís Cristina de; Regina,Murillo de Albuquerque. The performance of Syrah grapevine under protected cultivation with different plastic films was evaluated during 2012 and 2013 seasons in South of Minas Gerais State. Agronomical and physiological measurements were done on eight years old grapevines, grafted onto ‘1103 Paulsen’ rootstock cultivated under uncovered conditions, covered with transparent and with diffuse plastic films. Both plastic covers induced the highest shoot growth rate and specific leaf area. The diffuse plastic induced greater differences on leaf area, pruning weight and leaf chlorophyll content as compared to uncovered vines. Grapevines under diffuse plastic also had the lowest rates of photosynthesis, stomatal conductance and transpiration. Leaf starch, glucose and fructose contents... Tipo: Info:eu-repo/semantics/article Palavras-chave: Vitis vinifera; Plastic cover; Vegetative vigor; Water relations; Gas exchange; Wine grape composition. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300270 Physiological and biochemical responses to drought stress in Barbados cherry Braz. J. Plant Physiol. Medeiros,David Barbosa; Silva,Elizamar Ciriaco da; Santos,Hugo Rafael Bentzen; Pacheco,Cinthya Mirella; Musser,Rosimar dos Santos; Nogueira,Rejane Jurema Mansur Custódio. To evaluate physiological genotypic differences between two Barbados cherry genotypes (13- and 14-CPA) under water deficit, initial growth, water relations, and organic solute accumulation were evaluated in an experiment performed using four-month-old seedlings, which were subjected to four water treatments (100, 75, 50, and 25% of field capacity), with five replications. Severe water deficit (25% of field capacity) negatively affected plant height, stem diameter, leaf area, dry matter of the leaves and stem to both genotypes, and root dry matter to genotype 13-CPA. Predawn (Ywpd) and midday leaf water potentials (Ywmd) were reduced in plants grown under 25% of field capacity, only in the genotype 14-CPA. There was not a change in relative water content,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Malpighia emarginata DC; Soluble organic solutes; Biomass allocation; Water relations; Water deficit. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000300005 Physiological responses of NaCl stressed cowpea plants grown in nutrient solution supplemented with CaCl2 Braz. J. Plant Physiol. Silva,José Vieira; Lacerda,Claudivan Feitosa de; Costa,Paulo Henrique Alves da; Enéas Filho,Joaquim; Gomes Filho,Enéas; Prisco,José Tarquínio. Pitiuba cowpea (Vigna unguiculata (L.) Walp.) plants were grown in nutrient solution and kept in a greenhouse up to pre-flowering stage. They were subjected to four different treatments: nutrient solution; nutrient solution containing 75 mmol.L-1 NaCl; nutrient solution containing 75 mmol.L-1 NaCl and 5 mmol.L-1 CaCl2; and nutrient solution containing 75 mmol.L-1 NaCl and 10 mmol.L-1 CaCl2. Salt stress strongly inhibited plant growth, caused a disturbance in plant-water balance, and increased the total content of inorganic solutes in the different plant parts, due mainly to accumulation of Na+ and Cl-. It also increased leaf and root soluble carbohydrates, reduced soluble amino nitrogen both in root tips and in the youngest trifoliate leaves, and reduced... Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcium; Growth; Salt stress; Solutes accumulation; Vigna unguiculata; Water relations. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000200005 Postharvest quality of Aster ericoides after treatment with silver thiosulphate and sucrose Ciência Rural Pivetta,Kathia Fernandes Lopes; Mattiuz,Claudia Fabrino Machado; Melo,Regina Ferreira de; Gimenes,Renata; Romani,Gustavo de Nobrega; Batista,Gisele Sales. ABSTRACT: Aster (Aster ericoides L.) is a flower crop of North American origin, which belongs to the family Asteraceae. This plant presents capitulum-type inflorescences, widely used as cut flowers. In Brazil, it has been grown only recently, but still has a high expansion potential. In floriculture, pulsing and conditioning solutions are often used to extend the vase life of cut flowers. The present study aimed to evaluate the influence of silver thiosulphate (STS) pulsing and sucrose solutions on the postharvest life of A. ericoides stems. The experiment was carried out under a complete randomized design with treatments arranged in a 2x5 factorial scheme. Treatments consisted of flower stems treated with STS pulsing for 30 minutes, combined with four... Tipo: Info:eu-repo/semantics/article Palavras-chave: Water relations; Vase life; Pulsing; Aster. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001200202 Respuesta del pimiento morrón al secado parcial de la raíz y sustratos en hidroponía e invernadero. Colegio de Postgraduados Chamú Baranda, Juan Antonio. La sobre explotación de los acuíferos en México requiere estrategias eficientes en la aplicación y ahorro del agua para la sustentabilidad de los cultivos hortícolas. Así, el objetivo de la presente investigación fue evaluar el efecto de dos niveles de humedad aprovechable residual (HAR) y dos sustratos bajo la técnica de secado parcial de la raíz (SPR) en comparación con riego convencional sobre la fisiología, crecimiento, rendimiento, calidad del fruto y eficiencia en el uso del agua en plantas de pimiento morrón Cannon F1. El experimento se estableció del 15 de abril al 12 de julio de 2010 en condiciones de hidroponía e invernadero, en el Campus Montecillo del Colegio de Postgraduados, México. Los tratamientos se distribuyeron bajo un diseño... Palavras-chave: Capsicum annuum L.; Relaciones hídricas; Intercambio de gases; Eficiencia en el uso del agua; Water relations; Gas exchange; Water use efficiency; Maestría; Hidrociencias. Ano: 2010 URL: http://hdl.handle.net/10521/219 Respuesta del pimiento morrón al secado parcial de la raíz y sustratos en hidroponía e invernadero. Colegio de Postgraduados Chamú Baranda, Juan Antonio. La sobre explotación de los acuíferos en México requiere estrategias eficientes en la aplicación y ahorro del agua para la sustentabilidad de los cultivos hortícolas. Así, el objetivo de la presente investigación fue evaluar el efecto de dos niveles de humedad aprovechable residual (HAR) y dos sustratos bajo la técnica de secado parcial de la raíz (SPR) en comparación con riego convencional sobre la fisiología, crecimiento, rendimiento, calidad del fruto y eficiencia en el uso del agua en plantas de pimiento morrón Cannon F1. El experimento se estableció del 15 de abril al 12 de julio de 2010 en condiciones de hidroponía e invernadero, en el Campus Montecillo del Colegio de Postgraduados, México. Los tratamientos se distribuyeron bajo un diseño... Palavras-chave: Capsicum annuum L.; Relaciones hídricas; Intercambio de gases; Eficiencia en el uso del agua; Water relations; Gas exchange; Water use efficiency; Maestría; Hidrociencias. Ano: 2010 URL: http://hdl.handle.net/10521/219 Saline-boron stress in northern Chile olive accessions: water relations, B and Cl contents and impact on plant growth Ciencia e Investigación Agraria Escobar,Hugo; Lara,Nelson; Zapata,Yubinza; Urbina,Camilo; Rodriguez,Manuel; Figueroa,Leonardo. H. Escobar, N. Lara, Y. Zapata, C. Urbina, M. Rodriguez, and L. Figueroa. 2013. Saline-boron stress in northern Chile olive accessions: water relations, B and Cl contents and impact on plant growth. Cien. Inv. Agr. 40(3): 597-607. The objective of this study was to analyze the effect of saline-boron stress on the vegetative growth, dry leaf weight, water potential (Ψw), relative water content, and leaf and root B and Cl- contents in 8 accessions of olive. Rooted one-year-old plants were cultivated for 132 days with 50% shading in 5-L pots containing sand substrate and watered with Jensen's nutrient solution. After eight days of uniform ferti-irrigation, the plants were exposed to saline-boron stress, which was administered in three successive... Tipo: Journal article Palavras-chave: Boron; Chloride; Olive; Salinity; Water relations. Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000300012 Salinity effects on leaf ion composition and salt secretion rate in Avicennia germinans (L.) L. Braz. J. Plant Physiol. Suárez,Nathalie; Medina,Ernesto. The effect of salinity on leaf water relations, and rate and ionic composition of leaf secretion was investigated in plants of Avicennia germinans growing under controlled salinity conditions. Increases in salinity from 0 to 940 mol NaCl m-3 reduced the predawn water potential from -0.56 to -4.16 MPa and the solute potential from -2.27 to -4.48 MPa, whereas the pressure potential remained positive in all treatments. Compared to the control, at 940 mol NaCl m-3 Na+ and Cl- concentrations of leaf sap increased 19 and 7 times, respectively. With the addition of salt the main ions accumulated in leaves were Na+ and Cl- whereas plants grown without salt accumulated K+ in leaves at levels similar to those of Na+ with salt treatments. Secretion rates of Na+ and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ion concentration; Mangroves; Na+/K+ ratio; Salt stress; Water relations. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000200005 Soil Water Potentials and Capsicum annuum L. under Salinity Rev. Bras. Ciênc. Solo and,Heitor Henrique Félix Duarte; Souza,Edivan Rodrigues de. ABSTRACT Investigations into water potentials in the soil-plant system are of great relevance in environments with abiotic stresses, such as salinity and drought. An experiment was developed using bell pepper in a Neossolo Flúvico (Fluvent) irrigated with water of six levels of electrical conductivity (0, 1, 3, 5, 7 and 9 dS m-1) by using exclusively NaCl and by simulating the actual condition (using a mixture of salts). The treatments were arranged in a randomized block design, in a 6 × 2 factorial arrangement, with four replicates. Soil matric (Ψm) and osmotic (Ψo) potentials were determined 70 days after transplanting (DAT). Soil total potential was considered as the sum of Ψm and Ψo. Leaf water (obtained with the Scholander Chamber) and osmotic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Water relations; Osmotic potential; Bell pepper. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100403 Stress index, water potentials and leaf succulence in cauliflower cultivated hydroponically with brackish water AGRIAMBI Cruz,Adiel F. da S.; Silva,Gerônimo F. da; Silva,Ênio F. de F. e; Soares,Hammady R. e; Santos,Jenyffer da S. G.; Lira,Raquele M. de. ABSTRACT The tolerance of crops to salinity is greater in hydroponic systems due to the low contribution of the matric potential to the total potential of the water. The objective of this study was to evaluate the use of brackish water, to prepare the nutrient solution and replace the evapotranspired volume, and rates of application of this solution on the water stress index, water potential, leaf succulence and water consumption of cauliflower cv. ‘Piracicaba Precoce’. The experimental design was completely randomized in a 6 x 2 factorial scheme, with six salinity levels used to prepare the nutrient solutions (0.2, 1.5, 2.5, 3.5, 4.5 and 5.5 dS m-1) and two application rates of these solutions (1.5 and 2.5 L min-1), with four replicates. Water stress... Tipo: Info:eu-repo/semantics/article Palavras-chave: Water relations; Hydroponics; Salinity. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900622 Tolerance to water deficiency between two soybean cultivars: transgenic versus conventional Ciência Rural Catuchi,Tiago Aranda; Vítolo,Hílton Fabrício; Bertolli,Suzana Chiari; Souza,Gustavo Maia. The main goal of the study was to evaluate the effects on the development and physiological aspects of soybean plants grown under water deficiency at greenhouse conditions, comparing the levels of tolerance to water deficiency between one transgenic and one conventional cultivar, enabling a systematic way to carried out physiological comparisons between soybean cultivars under drought. The study was divided into completely randomized using a factorial 2×2 design, with five replicates. The experimental design included two replenishment levels of daily irrigation (100% and 40%), applied to the leaves during the V4 developmental stage (fourth trifoliate fully expanded) and two cultivars, 'CD 202' conventional and 'CD 226RR' transgenic. The results showed that... Tipo: Info:eu-repo/semantics/article Palavras-chave: Drought; Glycine max; Photosynthesis; Water relations. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000300002 Tolerance to water deficit in young trees of jackfruit and sugar apple Rev. Ciênc. Agron. Rodrigues,Bruno Monteiro; Souza,Bruna Dias; Nogueira,Rejane Mansur; Santos,Mauro Guida. The predawn leaf water potential (Ψl), stomatal conductance (g s), CO2 assimilation (A), transpiration (E), chlorophyll a fluorescence and leaf metabolite contents (soluble sugars, proteins and free amino acids) of two tropical fruit species grown in a greenhouse were evaluated to determine the effect of induced water stress on young plants. Six month-old jackfruit (Artocarpus heterophyllus Lam.) and sugar apple (Annona squamosa L.) plants were evaluated in 10.0 L pots after eight days of water withholding, imposed by suspension of irrigation. Jackfruit water status was better than sugar apple. Sugar apple plants showed different daily stomatal behavior when well hydrated, compared to jackfruit plants under the same conditions. The gas exchange of both... Tipo: Info:eu-repo/semantics/article Palavras-chave: Annona squamosa; Artocarpus heterophyllus; Semi-arid; Tropical fruit; Water relations. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902010000200011 Tolerancia a salinidad de Persea americana Mill en cultivo in vitro. Colegio de Postgraduados Ramírez Guerrero, Leobarda Guadalupe. El objetivo de la investigación fue conocer los efectos de salinidad en el desarrollo y anatomía de embriones maduros de dos tipos de aguacate cultivados in vitro e identificar alguna fuente de tolerancia al estrés salino. El trabajo consistió en: I) Establecimiento in vitro; II) Evaluación del desarrollo y sobrevivencia in vitro; III) Evaluación de parámetros de tolerancia a salinidad en aguacate en cultivo in vitro; IV) Cambios anatómicos en la raíz inducidos por salinidad. Se sembraron in vitro ejes embrionarios de aguacate tipo criollo y ‘Hass’ en medio Murashige y Skoog (1962) con diferentes concentraciones de NaCl y CaCl2 y con la combinación de éstas, en proporción 1:1; se estudió la germinación, emergencia, el desarrollo y la supervivencia de las... Palavras-chave: Ejes embrionarios; Aguacate; Estrés salino; Portainjertos; Resistencia a salinidad; Relaciones hídricas; Anatomía de raíz; Embryonic axes; Avocado; Salt stress; Rootstocks; Salinity resistance; Water relations; Anatomy of roots; Doctorado; Fruticultura. Ano: 2010 URL: http://hdl.handle.net/10521/232 Tolerancia a salinidad de Persea americana Mill en cultivo in vitro. Colegio de Postgraduados Ramírez Guerrero, Leobarda Guadalupe. El objetivo de la investigación fue conocer los efectos de salinidad en el desarrollo y anatomía de embriones maduros de dos tipos de aguacate cultivados in vitro e identificar alguna fuente de tolerancia al estrés salino. El trabajo consistió en: I) Establecimiento in vitro; II) Evaluación del desarrollo y sobrevivencia in vitro; III) Evaluación de parámetros de tolerancia a salinidad en aguacate en cultivo in vitro; IV) Cambios anatómicos en la raíz inducidos por salinidad. Se sembraron in vitro ejes embrionarios de aguacate tipo criollo y ‘Hass’ en medio Murashige y Skoog (1962) con diferentes concentraciones de NaCl y CaCl2 y con la combinación de éstas, en proporción 1:1; se estudió la germinación, emergencia, el desarrollo y la supervivencia de las... Palavras-chave: Ejes embrionarios; Aguacate; Estrés salino; Portainjertos; Resistencia a salinidad; Relaciones hídricas; Anatomía de raíz; Embryonic axes; Avocado; Salt stress; Rootstocks; Salinity resistance; Water relations; Anatomy of roots; Doctorado; Fruticultura. Ano: 2010 URL: http://hdl.handle.net/10521/232 Transpiration and stomatal resistance variations of perennial tropical crops under soil water availability conditions and water deficit BABT Sena,José Ozinaldo Alves de; Zaidan,Humberto Actis; Castro,Paulo Roberto de Camargo e. During the dry and rainy seasons, determinations of stomatal resistance and transpiration of five tropical crops were carried out: guarana (Paullinia cupana Kunth), coffee (Coffea arabica L.), cashew (Anacardium occidentale L.), guava (Psidium guajava L.) and rubber (Hevea brasiliensis Muell. - Arg.) trees. Experimental design was done at randomized complete blocks with five replications. During the dry season there was a decrease in values of stomatal resistance in the following order: guarana > coffee> cashew> guava > rubber, with values from 2.5 to 30.0 s.cm-1. During the rainy season the stomatal resistance values varied from 1.5 to 3.0 s.cm-1. The guarana and coffee crops showed higher resistance to water transpiration when compared to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Trees; Water relations; Tropical crops. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200007 Registros recuperados: 25 Primeira ... 1 2 ... Última

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