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| Registros recuperados: 12 | |
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| Franco Ospina,Luis Alberto; Castro Guerrero,Jenny Paola; Ocampo Buendía,Yanet Cecilia; Pájaro Bolívar,Indira Beatriz; Díaz Castillo,Fredyc. |
| Introducción: Tabebuia rosea (Bertol.) A. DC. y Tabebuia ochracea (Cham.) Standl., que pertenecen a la familia Bignoniaceae, son utilizadas en la medicina popular por su potencial farmacológico como antiinflamatorio y antibacteriano, lo que ha motivado su estudio químico y biológico. Objetivos: determinar la actividad antiinflamatoria, antioxidante y antibacteriana de extractos totales etanólicos y fracciones en éter, diclorometano, acetato de etilo y etanol, obtenidas a partir de la corteza interna de Tabebuia rosea y Tabebuia ochracea. Métodos: el material vegetal se extrajo por maceración con etanol y se fraccionó mediante procedimientos de partición líquido/líquido. La actividad antiinflamatoria se evaluó utilizando el modelo murino in vivo de edema... |
| Tipo: Journal article |
Palavras-chave: Tabebuia; Antiinflamatorios; Antioxidantes; Antibacterianos. |
| Ano: 2013 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962013000100006 |
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| Capuzzo,Juliana Pfrimer; Rossatto,Davi Rodrigo; Franco,Augusto César. |
| The genus Tabebuia is representative of the Cerrado biome, occurring in savanna and forest formations. These vegetation types are associated with distinct environmental conditions in terms of water availability, microclimate and soil properties. We compared morphological and physiological traits between Tabebuia aurea (Silva Manso) Benth. & Hook. f. ex S. Moore, which is typical of the savanna vegetation, and T. impetiginosa (Mart. ex DC.) Standl, which is commonly found in the gallery forests that occur along streams and rivers. Both were sampled in savanna conditions under full sun. The savanna species had higher values of leaf and petiole thickness, specific leaf mass, maximum CO2 assimilation on a leaf area basis, stomatal conductance,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; CO2 assimilation; Leaf area; Photosynthetic pigments; Tabebuia. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000300002 |
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| Oliveira, Ademir Kleber Morbeck; Universidade Anhanguera; Gualtieri, Sônia Cristina Juliano de; Universidade Federal de São Carlos; Bocchese, Ricardo Anghinoni; Universidade Anhanguera. |
| To evaluate the effects of hydric stress on CO2 and H2O exchange, five-month-old Tabebuia aurea seedlings cultivated in planting bags were subjected to hydric stress by suppressing irrigation for 21 days. After 14 days without irrigation, the rates of transpiration, stomatal conductance and net photosynthesis in leaves were zero, while the hydric potential of leaves reached -2.4 MPa. After this point, daily irrigation was resumed, and the values of the measured variables recovered to initial levels after 96 hours (transpiration rate from 3.2 to 3.5 mmol m-2 s-1; stomatal conductance rate from 0.32 to 0.35 mol m-2 s-1 and photosynthesis rate from 8.0 to 9.8 µmol m-2 s-1). Likewise, hydric potential values were similar to those at the beginning of... |
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Palavras-chave: 5.02.01.06-9 hydric deficit; Photosynthesis; Conductance; Tabebuia Fisiologia Florestal hydric deficit; Photosynthesis; Conductance; Tabebuia. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/11254 |
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| Zapater,Maria A; Califano,Laura M; Del Castillo,Elvio M; Quiroga,Mirta A; Lozano,Evangelina C. |
| Los estudios más recientes en Argentina sobre el género Tabebuia y Handroanthus reconocen la existencia de dos y seis especies nativas respectivamente, además de una especie exótica de Handroanthus cultivada en el arbolado urbano. Sin embargo no todo está resuelto en los géneros, por cuanto se citan conflictos taxonómicos para el noroeste argentino (NOA). Nuevas colecciones que se efectuaron en Salta y Jujuy, y la revisión de un importante número de ejemplares de herbarios, confirmaron la existencia de una muy alta variabilidad en las poblaciones de la región NOA y de situaciones conflictivas y/o confusas que impedían la correcta identificación de las entidades. Debido a ello, se considera necesario efectuar la revisión de los géneros analizando materiales... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argentina; Bignoniaceae; Handroanthus; Tabebuia; Taxonomía. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932009000100010 |
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| BITTENCOURT JÚNIOR,NELSON S.; MARIATH,JORGE E.A.. |
| The ovule of Tabebuia pulcherrima is anatropous, unitegmic and tenuinucellate. The nucellus shows a trizonate structural organization. The integument is initiated by periclinal divisions in the dermal layer (zone I), around the base of the archesporium. Subsequently, cells derived from the subdermal layer (zone II) start to push the dermal cells, so that they shift toward the micropylar region. The archesporial cell differentiates directly into the megaspore mother cell, undergoes meiosis, and originates a linear tetrad of megaspores. The mature embryo sac mother cell is elongated, possess a conspicuous central nucleus, and a characteristic bipolar vacuome with fibrous-granulated content. The inner cell layers of the integument differentiate into an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Integument; Megasporogenesis; Ovule ontogeny; Tabebuia; Bignoniaceae. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000100013 |
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| Registros recuperados: 12 | |
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