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| Registros recuperados: 84 | |
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| Corredor, Jenny; De Conti, Daniela; Guerra, Miguel Pedro; Dal Vesco, Lirio Luiz; Pescador, Rosete. |
| Tissue culture techniques have been employed for bromeliad mass propagation by means of the morphogenetic route of nodular cluster cultures (NCs). This study aimed to assess protein, carbohydrate and global DNA methylation (GDM) level dynamics during NCs induction from Vriesea reitzii seeds. Seeds were inoculated into Murashige and Skoog (MS) liquid medium supplemented with 4 µM α-naphthaleneacetic acid (NAA) to induce NCs and in culture medium without plant growth regulators to form normal seedlings. Samples collected at 0, 3, 7, 10, 14, and 21 days of culture were analyzed. All parameters assessed showed the same variation pattern. However, seeds inducing NCs showed significantly lower starch (6.0 mg g-1 FM), carbohydrate (10.7 mg g-1 FM) and GDM (11.0%)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bromeliaceae; Bromeliad; Germination; Micropropagation; Seedling. Bromeliaceae bromeliad germination micropropagation seedling.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42448 |
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| Bonato e Negrelle, Raquel Rejane; UFPR; Muraro, Daniel; UFPR. |
| Este trabalho apresenta resultados de monitoramento fenológico e quantificação da produção de sementes de Vriesea incurvata Gaudich, realizados no Parque Estadual Rio da Onça (município de Matinhos, Estado do Paraná, 25º 50’S e 48º 30’ W). Registrou-se a ocorrência das fenofases de floração, frutificação, dispersão e emissão de brotos laterais. Paralelamente, coletaram-se 30 inflorescências em duas oportunidades (agosto de 2003 e 2004), sendo estas avaliadas quanto ao tamanho, número de frutos formados e quantidade de sementes. O início de floração foi evidenciado a partir de janeiro e fevereiro, com pico em abril e maio. A frutificação e a emissão de brotos clonais iniciaram-se em abril com pico em junho e julho e a dispersão teve início em agosto... |
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Palavras-chave: 2.03.00.00-0 Botânica fenologia; Bromeliaceae; Produto vegetal não madeirável 2.03.00.00-0 Botânica. |
| Ano: 2006 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1011 |
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| REINERT,FERNANDA; LEAL-COSTA,MARCOS V.; JUNQUEIRA,NICIA E.; TAVARES,ELIANA S.. |
| Sun and shade plants are often discriminated by a number of sun- and shade-type anatomies. Nonetheless, we propose that among tank-bromeliads, changes in rosette architecture satisfy the requirements for coping with contrasting light levels. The tank-bromeliad Neoregelia cruenta naturally colonises sub-habitats ranging from full exposure to direct sunlight, to shaded environments in sand ridge plains. We quantified anatomical and morphological traits of leaves and rosettes of N. cruenta grown under sun and shade conditions. Cells with undulated lateral walls within the water parenchyma are for the first time described for the family. Under high light, leaf blades were wider, shorter, and yellowish. The rosette diameter of sun plants was less than half that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bromeliaceae; Crown architecture; Leaf anatomy; Plant morphology. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200561 |
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| Moraes de Carvalho,Katharinne I; Fernandes,Hélio B; Frota Machado,Flávia D; Oliveira,Irisdalva S; Oliveira,Francisco A; Nunes,Paulo Humberto M; Lima,Julianeli T; Silva Almeida,Jackson R G; Meneses Oliveira,Rita C. |
| This study evaluated the antiulcer activity of an ethanolic extract of Encholirium spectabile (ES-EtOH) by using different standard experimental models of induced acute gastric ulceration. ES-EtOH (100 mg/kg p.o) protected the gastric mucosa against ulceration that was induced by absolute ethanol (53%), ethanol/HCl (75 %), ibuprofen (52 %) and ischemia/reperfusion (43 %). It also restored catalase activity and non-protein sulfhydryl group concentration in the gastric wall of mice that had been treated with ethanol. The pre-treatment of mice with N-nitro-L-arginine (70 mg/kg i.p.) abolished the protective activity of ES-EtOH, which indicates that prostaglandins, antioxidant compounds and nitric oxide synthase activity are involved in the gastroprotective... |
| Tipo: Journal article |
Palavras-chave: Antioxidant; Antiulcer activity; Encholirium spectabile; Bromeliaceae. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000400011 |
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| Leitman,Paula; Amorim,André; Menini Neto,Luiz; Forzza,Rafaela C.. |
| The Atlantic Forest in southern Bahia State, Brazil, has high levels of diversity and vascular plant endemism. There have been few floristic surveys of the mountain forests there, however, especially those focusing on herbs and canopy plants, with studies of Atlantic Forest epiphytes having been limited to the southern and southeastern region of that country. The present study therefore surveyed the epiphytic angiosperms in the Serra das Lontras National Park (SLNP), the distribution of their species among genera and families, and their biogeographical patterns. Fieldwork was performed between February 2011 and March 2012. Collections were made along roads and trails and phorophytes were occasionally climbed and fallen trees and branches examined in order... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic forest; Araceae; Bromeliaceae; Orchidaceae; Biogeographical patterns. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000200210 |
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| Silveira,Daniela Garcia; Souza,Fernanda Vidigal Duarte; Pelacani,Claudinéia Regina; Souza,Antonio da Silva; Ledo,Carlos Alberto da Silva; Santana,José Raniere Ferreira de. |
| Neoglaziovia variegata (Arr. Cam.) Mez is a Bromeliaceae native to the Caatinga, used for fiber extraction in the Northeast Region of Brazil. The antropic activity has place this species among the threatened ones. The objective of the work was to establish an in vitro propagation and conservation of caroá. Seeds were cultivated in MS medium in the presence or absence of light. In vitro germinated seedlings were multiplied in MS medium supplemented with the combinations 0.05 and 0.50 µM NAA and 2.2 and 4.4 µM BAP and KIN. The best percentages of germination were obtained with the seeds incubated in the presence of light. The highest multiplication ratio was obtained for the NAA (0,5 µM) + BAP (4,4 µM) treatment and the number of roots, with NAA (0.5 µM) +... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acclimatization; Bromeliaceae; Fiber extraction; In vitro preservation; Seedling production. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400016 |
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| Takahashi,Cassia A.; Ceccantini,Gregório C.T.; Mercier,Helenice. |
| The leaf is the main organ of the vegetative body of tank epiphytic bromeliads, which may be subdivided into apical and basal parts. Little is known about the existence of morphological, anatomical or physiological differences between these two leaf portions. The objective of this study was to verify the existence of a differential capacity to assimilate nitrogen from urea between basal and apical leaf portions of Vriesea gigantea, a tank epiphytic bromeliad. Plants were cultivated in vitro in the presence of 5 mM urea for 15 days. During this period, the activities of the enzymes glutamine synthetase (GS, EC 6.3.1.2) and NADH-dependent glutamate dehydrogenase (NADH-GDH, EC 1.4.1.2) were quantified, as well as the densities of trichomes and stomata found... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bromeliaceae; Glutamate dehydrogenase; Glutamine synthetase; Stomata; Trichome; Urea. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000200004 |
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| Mercier,Helenice; Souza,Beatriz Maia; Kraus,Jane Elizabeth; Hamasaki,Regina Mayumi; Sotta,Bruno. |
| The in vitro culture of pineapple leaves on a shoot induction medium (SIM) results in the formation of protuberances and further development in shoots, and plantlets. The contents of endogenous indoleacetic acid (IAA) and five cytokinins (Cks), N6(2-isopentenyl)adenine (iP), N6(2-isopentenyl)adenosine (iPR), zeatin (Z), zeatin riboside (ZR) and N6-benzyladenine (BA), present in the basal portion of those leaves, were correlated to the organogenic response that occurs over 15 days of culture. The endogenous auxin/cytokinins ratio was lowest on the 3rd day, mainly due to a strong increase in the iP level. It seems that endogenous iP concentration triggered the induction signal for an organogenic response in pineapple leaf bases. The rise in iP content... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ananas comosus; Auxin; Bromeliaceae; Cytokinin; Hormone signalling; Plant regeneration. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000200006 |
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| Crestani,Maraisa; Barbieri,Rosa Lia; Hawerroth,Fernando José; Carvalho,Fernando Irajá Félix de; Oliveira,Antonio Costa de. |
| O abacaxi (Ananas comosus (L.) Merril), fruto símbolo de regiões tropicais e subtropicais, originário das Américas, foi difundido para todo o mundo, principalmente pelos navegantes europeus, em razão de seu aroma e sabor característicos e exuberante aparência. Batizado como o "Rei das Frutas Coloniais", o abacaxi encontra-se entre as 11 frutas mais produzidas no mundo, sendo cultivada e consumida pelos cinco continentes, e o Brasil destaca-se como maior produtor. Assim, o objetivo desta revisão bibliográfica é abordar a história da cultura do abacaxi, contemplando sua botânica, sua origem e dispersão pelo mundo, seu cenário atual, também aspectos relacionados à conservação de germoplasma e ao melhoramento genético. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ananas comosus; Bromeliaceae; História; Evolução; Fruticultura; Recursos genéticos; Melhoramento vegetal. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000600040 |
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| Registros recuperados: 84 | |
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