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Registros recuperados: 34 | |
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Rizzini,Cecilia Maria; Agarez,Fernando Vieira; Andrade,Luis Henrique C. de; Azevedo,Andrea P. de. |
São estudadas as espécies da família Bignoniaceae que ocorrem na Restinga de Maricá, cuja flora se encontra ameaçada devido a diversas interferências que vêm alterando sua composição florística e vegetacional. A família está representada nesta área por sete gêneros e onze espécies, das quais seis são ocorrências novas para o local. O trabalho inclui a descrição da área de estudo em seus distintos gradientes, chaves analíticas para gêneros e espécies, descrições resumidas para as espécies, denominação popular, distribuição geográfica, material examinado e observações taxonômicas e de campo. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bignoniaceae; Restinga de Maricá; Florística. |
Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061997000200006 |
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Grosso,M.; Kraus,T.. |
El objetivo del presente trabajo es estudiar la forma de crecimiento de Dolichandra cynanchoides, especie trepadora característica del bosque serrano de la Provincia de Córdoba (Argentina), e inferir sus caracteres adaptativos. Los estudios se realizaron en su ambiente durante tres años consecutivos y en invernáculo los dos primeros años de vida. La forma de crecimiento de esta especie resulta de la presencia y combinación de los siguientes caracteres: liana perenne, germinación criptohipógea, vástagos aéreos predominantemente ortótropos y subterráneos ligeramente plagiótropos, sinflorescencias constituídas por tirsas con florescencias parciales dicasiales, raíz principal y raíces adventicias. El tallo presenta una estructura anómala, la cual le otorga... |
Tipo: Journal article |
Palavras-chave: Forma de crecimiento; Dolichandra cynanchoides; Bignoniaceae; Caracteres adaptativos. |
Ano: 2001 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432001000200007 |
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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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Feres,Reinaldo José Fazzio; Bellini,Marcos Roberto; Rossa-Feres,Denise de Cerqueira. |
This study reports the mite fauna associated with Tabebuia roseo-alba, a native and ornamental tree, determining the abundance and seasonal occurrence of species and the diversity of the community. Twenty three species were found belonging to 11 families, 10 of predatory habits and five phytophagous. The food habits of the eight remaining species are not known. Besides the great richness, the diversity was small, as consequence of the dominance of Lorryia formosa Cooreman, 1958 and Aculus sp., the most abundant species. These species occurred in the same microhabitat but with seasonal segregation: L. formosa was the most abundant in the dry season, while Aculus sp. occurred only in the rainy season. In August, when the plant lost its leaves, the following... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acari; Bignoniaceae; Biodiversity; Ecology; Mites; Tabebuia roseo-alba. |
Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000300002 |
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Barbosa-Filho,José Maria; Sampaio A Lima,Cláudia; Camorim,Elba Lúcia; de Sena,Kêsia Xisto FR; Almeida,Jackson Roberto GS; Vasconcelos L da-Cunha,Emídio; Silva,Marcelo S; Agra,Maria de Fátima; Braz-Filho,Raimundo. |
We report morphodiagnosis, and phytochemical and antimicrobial investigations of Tabebuia aurea. It was noted that the leaves are compostas with anomocytic stomata only on the lower side; the vascular system is concentric andthe mesophyll arrangement is dorsiventral. From the stem bark eight compounds were isolated, including: lapachol, 3,4',5-trihydroxy-7-methoxyflavone, b-sitosterol, betulinic acid, p-anisic acid, veratric acid, methyl cinnamate and ethyl p-hydroxy-cinnamate. Antimicrobial assays showed growth inhibition the of Gram positive and Gram negative bacteria, alcohol-acid bacterium and fungi. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tabebuia aurea; Bignoniaceae; Pharmacobotany; Lapachol; Chemical constituents; Antimicrobial activity. |
Ano: 2004 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100027 |
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Freitas,André V.L.. |
The immature stages of Adelpha malea goyama Schaus are described from the Estação Ecológica do Caiuá, Paraná State, Brazil. The species uses the native liana Arrabidaea mutabilis Bur. & K. Schum. (Bignoniaceae) as larval hostplant in the study site. Isolated eggs are laid on leaf tips, and are similar in shape to those described for other species of Adelpha Hübner. Larvae pass through five stadia during 21 days, and first to third instars construct frass chains. Later instars rest on the upper leaf surface, and their body is covered by rigid branched scoli. The general profile of the pupa is elongated, with short head horns projecting laterally and with segment A2 projecting and curved anteriorly. Comparisons with closely related species of Adelpha... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arrabidaea; Bignoniaceae; Butterfly; Life history; Atlantic Forest. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000500008 |
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Bertoni,Bianca Waléria; Astolfi Filho,Spartaco; Martins,Ernani Ronie; Damião Filho,Carlos Ferreira; França,Suzelei de Castro; Pereira,Ana Maria Soares; Telles,Mariana Pires de Campos; Diniz Filho,José Alexandre F.. |
Zeyheria montana, an endemic species of the Bignoniaceae family from the Brazilian Cerrado's known for its anti-cancer properties, is widely used as imuno stimulant in the popular medicine and its therapeutic activity must be validated by scientific data. The objective of this work was to evaluate the genetic variability of eight plant populations collected within the state of São Paulo, Brazil, via Random Amplification of Polymorphic DNA (RAPD) used as molecular markers. After an optimized protocol for the amplification reaction, nine selected primers generated 105 reproducible bands, indicating up to 60% polymorphism. Analysis of molecular variance (AMOVA) revealed higher genetic variation within populations (84.03%) than among populations (15.97%). The... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bignoniaceae; Germplasm bank; Bolsa-de-pastor; Conservation. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400012 |
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Ortolani,Flavia Aparecida; Mataqueiro,Márcia Fiorese; Moro,José Roberto; Moro,Fabíola Vitti; Damião Filho,Carlos Ferreira. |
Plântulas de Cybistax antisyphilitica (ipê-verde), espécie arbórea que ocorre no Estado de São Paulo, Brasil, foram estudadas morfoanatomicamente e citogeneticamente. As plântulas são eudicotiledôneas, fanerocotiledonares e epigéias. Suas sementes apresentam alas hialinas, assimétricas e de textura papirácea. A raiz é axial com tecido epidérmico irregular. O hipocótilo é verde, glabro e apresenta os elementos do xilema em diferenciação. Os cotilédones são verdes, foliáceos, reniformes, com mesofilo heterogêneo, epiderme pilosa e feixes vasculares colaterais. Os eófilos são glabros, peciolados, de filotaxia oposta, dorsiventrais, hipoestomáticos e possuem mesofilo heterogêneo e assimétrico. Não há diferenças anatômicas significativas entre os eófilos e os... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morfologia; Anatomia; Número cromossômico; Bignoniaceae; Plântula. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000200005 |
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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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Bertoni,Bianca W.; Telles,Mariana P. de C.; Malosso,Milena G.; Torres,Simone C.Z.; Pereira,José O.; Lourenço,Mirian V.; França,Suzelei de C.; Pereira,Ana M.S.. |
Jacaranda decurrens (Bignoniaceae) is an endemic species of the Cerrado with validated antitumoral activity. The genetic diversity of six populations of J. decurrens located in the State of São Paulo was determined in this study by using molecular markers for randomly amplified polymorphic DNA (RAPD) and amplified fragment length polymorphism (AFLP). Following optimization of the amplification reaction, 10 selected primers generated 78 reproducible RAPD fragments that were mostly (69.2%) polymorphic. Two hundred and five reproducible AFLP fragments were generated by using four selected primer combinations; 46.3% of these fragments were polymorphic, indicating a considerable level of genetic diversity. Analysis of molecular variance (AMOVA) using these two... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bignoniaceae; Carobinha; Cerrado; Germplasm bank; Preservation. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300025 |
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Registros recuperados: 34 | |
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