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| Registros recuperados: 36 | |
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| GUIMARÃES FILHO, C.; LOPES, P. R. C.; SILVA, P. C. G. da. |
| Em função da profunda diversidade de condições agroecológicas e sócioeconômicas que caracteriza a região semi-árida e da extrema complexidade que envolve a natureza dos fatores responsáveis pela condição de pobreza das comunidades que nela habitam, a concepção de um programa de convivência com a seca requer, antes de tudo, uma visão abrangente na definição do caminho a ser seguido. A sua execução, portanto, exigirá uma ampla ação cooperativa transdisciplinar e multiinstitucional. A base para o desenvolvimento econômico e social do Semi-Árido e, por conseguinte, o conviver com seca, não deve se limitar ao desenvolvimento da atividade agrícola. Este deve estar associado ao crescimento das atividades econômicas rurais (agrícolas e não agrícolas) que se... |
| Tipo: Folhetos |
Palavras-chave: Convivência com a seca; Semiárido; Desenvolvimento local; Espaço agronômico; Produção local; Seca; Resistência a Seca; Alimentação Na Seca; Recurso Natural; Desenvolvimento Sustentável; Projeto de Desenvolvimento; Desenvolvimento Socio-Econômico; Social environment; Rural development; Rural economics; Rural policy; Drought; Drought tolerance. |
| Ano: 2003 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1093481 |
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| Okuyama,Lauro Akio; Federizzi,Luiz Carlos; Barbosa Neto,José Fernandes. |
| Analyses of genotype by environment interactions were carried out for wheat genotypes grown under irrigated and non-irrigated field conditions, in two sowing dates during three years. The linear regression method was used to analyze the stability of grain yield. Genotype by environment interactions was observed for grain yield in all groups of environments. Nesser was the most productive and stable genotype in all groups of environments, followed by IAPAR 17-Caeté. In the late sowing, better yield performances were observed for the cultivars OCEPAR 7-Batuíra, IAPAR 17-Caeté and Nesser, under irrigated condition, and Nesser and IAPAR 28-Igapó, under non-irrigated condition. The results indicated that Nesser gave high grain yield with superior adaptability... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drought tolerance; Genotype by environment interaction; Water stress. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600004 |
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| ATALA,CRISTIAN; MUÑOZ-CAPPONI,EDGARDO; PEREIRA,GUILLERMO; NAVARRETE,EDUARDO; OSES,RÓMULO; MOLINA-MONTENEGRO,MARCO. |
| In drought condition, plants increase survival chance by adjusting their functional traits and by biological associations. Mycorrhizae association and artificial watering have been shown to increase plant survival under drought, especially at early developmental stages when plants are more susceptible. In Chile, Pinus radiata is the most important forest species. It is grown mainly in Central Chile, where precipitations are predicted to drop in 40% and change in frequency in the future due to climate change. Rhizopogon luteolus is an ectomycorrhizae usually associated with Pinus species and has been found to increase drought tolerance. We addressed the effect of R. luteolus inoculation on survival and functional traits of P. radiata seedlings exposed to... |
| Tipo: Journal article |
Palavras-chave: Pinus radiata; Rhizopogon luteolus; Climate change; Ectomycorrhizae; Drought tolerance. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000200009 |
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| COMASTRI FILHO, J. A.; POTT, A.. |
| A bovinocultura de corte, principal atividade economica da sub-regiao da Nhecolandia, do Pantanal, devido, principalmente, a problemas nutricionais, apresenta baixos indices de produtividade. A alimentacao dos bovinos e constituida de pastagens nativas, geralmente de produtividade ou valor nutritivo baixos e de baixa disponiblidade nos meses de cheia. Face a esta situacao, o CPA-Pantanal, entre 1980 e 1985, realizou um experimento de introducao e avaliacao da forrageira em area de "cordilheira" desmatada com o objetivo de identificar gramineas e leguminosas adaptaveis as suas condicoes ecologicas. As forrageiras (43 gramineas e 123 leguminosas) foram plantadas em parcelas de 1,5 x 3,0 m. Foram utilizadas duas parcelas, por local, para cada especie, uma com... |
| Tipo: Folhetos |
Palavras-chave: Planta graminea forrageira; Cordilheira; Resistencia a pragas; Resistencia a doencas; Tolerancia a seca; Plant; Grass; Pasture; Gramínea; Leguminosa; Pastagem; Produção; Pantanal; Drought tolerance; Forage; Disease resistance; Legumes; Pest resistance. |
| Ano: 1996 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/789742 |
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| COMASTRI FILHO, J. A.; POTT, A.. |
| O presente trabalho foi conduzido, em area de "cordilheira", na parte central da sub-regiao dos Paiaguas, do Pantanal Mato-Grossense. Os solos sao formados por sedimentos arenosos aluviais e na maior parte sao de baixa fertilidade. Entre 1980 e 1985, foram introduzidas e avaliadas 51 gramineas e 105 leguminosas, com o objetivo de identificar forrageiras adaptaveis as condicoes ecologicas da regiao. Para cada cultivar e/ou especies foram utilizadas duas parcelas de 1,5 x 3,0m com adubo (CA) e sem adubo (SA). O rendimento de materia seca de CA foi superior ao de SA apenas no primeiro ano. Segundo o indice de avaliacao (IA), no dominio de 0 a 3, as forrageiras mais promissoras se encontraram nos generos Andropogon, Brachiaria e Calopogonium. Das gramineas, a... |
| Tipo: Folhetos |
Palavras-chave: Forrageira; Cordilheira; Tolerancia a seca; Pasture; Wetland; Gramínea; Pastagem; Planta; Semente; Pantanal; Grasses; Drought tolerance; Forage; Legumes. |
| Ano: 1996 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/790955 |
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| NOGUEIRA,REJANE J. MANSUR C.; MORAES,JOSÉ ANTÔNIO P. V. DE; BURITY,HÉLIO ALMEIDA; BEZERRA NETO,EGÍDIO. |
| Young sexually and assexually propagated Barbados cherry plants were submitted to water deficit (20 days without irrigation). During this period the accumulation of proline, water potential of branches, osmotic potential, the relative water content of leaves, the leaf diffusive resistance, the transpiration rate and leaf temperature in the cuvette were determined. In addition, photosynthetically active radiation (PAR) and vapor pressure deficit (VPD) were measured in the porometer cuvette. The concentration of proline for both types of plants began to increase on the fifth day without watering, and reached 38.1 times the concentration in the control plants grown from seeds and 26.4 times the concentration in grafted plants on the tenth day without... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malpighia emarginata; Drought tolerance; Grafting; Proline; Transpiration; Vegetative propagation. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000100009 |
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| FRANÇA,NATIANA DE OLIVEIRA; AMORIM,MAURICIO DA SILVA; GIRARDI,EDUARDO AUGUSTO; PASSOS,ORLANDO SAMPAIO; SOARES FILHO,WALTER DOS SANTOS. |
| ABSTRACT In the State of Bahia, Brazil, the citrus industry is located on the north coast with the prevalence of the combination ‘Pera’ sweet orange on ‘Rangpur’ lime. Scion-rootstock diversification may contribute to the increase of yield and the extension of harvest season, as long as to decrease the risk associated to abiotic and biotic stresses. Therefore, the performance of ‘Tuxpan Valencia’ sweet orange grafted onto 14 rootstocks was evaluated in Rio Real – BA. Planting was performed in 2006 under rainfed cultivation on cohesive ultisol and tree spacing of 6.0 m x 4.0 m. Tree size, yield and fruit quality were evaluated in the period of 2010-2014, in addition to tree survival at nine years old and drought tolerance in the field based on leaf... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus spp.; Poncirus trifoliata; Drought tolerance; Fruit quality; Yield. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400702 |
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| Martim,Sílvia A.; Santos,Mirella P.; Peçanha,Anderson L.; Pommer,Celso; Campostrini,Eliemar; Viana,Alexandre P.; Façanha,Arnoldo R.; Bressan-Smith,Ricardo. |
| Winegrape productivity and quality has been related to the regulated deficit irrigation, with important implications for the plant bioenergetics. When water deficit is imposed to grapevine plants, alterations in overall photosynthesis and cell respiration are observed. The aim of this study was to assess the modulations promoted by water stress on photosynthesis and respiration in leaves of the cv. Cabernet Sauvignon (cv. CS) for better understanding the physiological responses related to its drought tolerance and quality improvement under water deficit. For this purpose, measurements of photosynthetic efficiency, leaf water potential, gas exchange and O2 consumption were carried out. Leaf water potential, photosynthesis, stomatal conductance,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera; Drought tolerance; Irrigation management; Respiratory chain regulation; Plant bioenergetics. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000200002 |
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| Silva,Marcelo de Almeida; Jifon,John Lonfover; Santos,Claudiana Moura dos; Jadoski,Cleber Junior; Silva,Jorge Alberto Gonçalves da. |
| The objective of this study was to compare the gas exchange, photosynthetic capacity and water potential of sugarcane genotypes cultivated under water deficit conditions imposed during the initial growth phase. Experiments were performed in a greenhouse using two sugarcane genotypes namely: HoCP93-776 (drought susceptible) and TCP02-4587 (drought tolerant). Sixty days after planting, two different water treatments were applied (i.e., with or without water deficit). At 0,30 and 60 days after the treatment, gas exchange variables were evaluated for their relationship with water use, intrinsic instantaneous water use efficiency and instantaneous carboxylation efficiency. The SPAD index, photosynthetic pigments, water potential and relative water content in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum spp.; Photosynthesis; Stomatal conductance; Chlorophyll; Drought tolerance; Water potential. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500004 |
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| Fadel,André Luiz; Mourão Filho,Francisco de Assis Alves; Stuchi,Eduardo Sanches; Ramos,Yuri Caires. |
| Abstract: The objective of this work was to select alternative rootstocks to 'Rangpur' lime for 'Valência' sweet orange scions in the northern region of the state of São Paulo, Brazil, based on initial fruit yield. Forty-one rootstocks were evaluated in an experiment carried out in March 2007, in the municipality of Colômbia, in the state of São Paulo. The accumulated fruit yield of 'Valência' sweet orange was assessed in the 2009, 2010, and 2011 crop seasons. The rootstocks 'Sunki' mandarin x Poncirus. trifoliata 'English', 'Malvasio SRA 115' mandarin, 'C-13' “S” citrange, 'Sunki' mandarin x P. trifoliata 'Benecke', 'Valência Rhode Red' sweet orange + 'Volkamer' lemon, 'C-54-4-4 SRA 337' mandarin, 'Cleopatra' mandarin x P. trifoliata 'Rubidoux',... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus; Citrus limonia Osbeck; Citrus sudden death; Drought tolerance; 'Rangpur' lime. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600774 |
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| Registros recuperados: 36 | |
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