Consulta: creatorFacets:"Scatena,Vera L."
Registros recuperados: 5
Data/hora: 18/05/2024 17:24:33

Anatomia de escapos de Tillandsia L. (Bromeliaceae) dos Campos Gerais do Paraná, Brasil
Provedor de dados: 88
Autores: Segecin,Simone; Scatena,Vera L.
Estudou-se a anatomia dos escapos de Tillandsia crocata (E. Morren) Baker, T. gardneri Lindl., T. geminiflora Brongn., T. linearis Vell., T. lorentziana Griseb., T. mallemontii Glaziou ex Mez, T. recurvata L., T. streptocarpa Baker, T. stricta Soland ex Sims, T. tenuifolia L. e Tillandsia sp., que ocorrem nos Campos Gerais do Paraná. São plantas epífitas de galhos de árvores ou de paredões rochosos. Os escapos são eretos ou recurvados, revestidos por brácteas e emergem do centro da roseta foliar. Verificaram-se dois padrões anatômicos de distribuição dos feixes vasculares. Um padrão onde os feixes vasculares ocorrem condensados perifericamente no cilindro vascular, circundados e/ou imersos num cilindro esclerótico - periciclo. Outro padrão onde os feixes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomia; Bromeliaceae; Escapos; Tillandsia.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000300011

Erratum to: Meristematic activity of the endodermis and the pericycle in the primary thickening in monocotyledons. Considerations on the "PTM" [An Acad Bras Cienc 77(2005): 259-274]
Provedor de dados: 42
Autores: Menezes,Nanuza L. de; Silva,Delmira C.; Arruda,Rosani C.O.; Melo-de-Pinna,Gladys F.; Cardoso,Vanessa A.; Castro,Neuza M.; Scatena,Vera L.; Scremin-Dias,Edna.
Tipo: Info:eu-repo/semantics/article
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652005000400005

Leaf and inflorescence axis anatomy of Brazilian species of Rapateoideae (Rapateaceae, Poales)
Provedor de dados: 42
Autores: Daltin,Ângela L.; Oriani,Aline; Scatena,Vera L.
The anatomy of leaves and inflorescence axes of Spathanthus (2 spp.), Rapatea (2 spp.), Cephalostemon(1 sp.), and Duckea(1 sp.) (Rapateoideae, Rapateaceae) was studied to identify useful characters for taxonomy. The cross-section shape of inflorescence axis differentiates the genera, while the cross-section shape and structure of leaf midrib has a specific value. The following characteristics are exclusive of Spathanthus: silica cells randomly distributed in the leaf epidermis; plicate chlorenchyma in the leaf blade; presence of fiber bundles in the mesophyll and in the inflorescence axis parenchyma. Spathanthus is also distinguished by the number, type and distribution of vascular bundles in the inflorescence axis. The genus Rapatea is characterized by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Cephalostemon; Duckea; Poales; Rapatea; Rapateaceae; Spathanthus.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100157

Meristematic activity of the Endodermis and the Pericycle in the primary thickening in monocotyledons: considerations on the "PTM"
Provedor de dados: 42
Autores: Menezes,Nanuza L. de; Silva,Delmira C.; Arruda,Rosani C.O.; Melo-de-Pinna,Gladys F.; Cardoso,Vanessa A.; Castro,Neuza M.; Scatena,Vera L.; Scremin-Dias,Edna.
This paper proposes a new interpretation for primary thickening in monocotyledons. The anatomy of the vegetative organs of the following species was examined: Cephalostemon riedelianus (Rapataceae), Cyperus papyrus (Cyperaceae), Lagenocarpus rigidus, L. junciformis (Cyperaceae), Echinodorus paniculatus (Alismataceae) and Zingiber officinale (Zingiberaceae). The endodermis with meristematic activity was observed in the root of all the species, in the stem of Cyperus, Cephalostemum and Lagenocarpus rigidus, and in the leaf trace of Cyperus and leaf of Echinodorus. Considering the continuity of tissues through the root, stem and leaf, the authors conclude that in the stem the pericycle remains active throughout the life of the plant as the generator of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cephalostemon; Cyperus; Echinodorus; Lagenocarpus; Zingiber; Meristematic endodermis; Pericycle; Primary thickening.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652005000200006

Morphological aspects of the propagation in Heliconia velloziana L. Emygd. (Zingiberales: Heliconiaceae)
Provedor de dados: 52
Autores: Simão,Daniela G.; Scatena,Vera L.
Morphology of seed and vegetative propagation was studied toHeliconia velloziana L. Emygd. (Heliconiaceae), a rhizomatous herb with a large aerial part. Seeds took about four months to germinate, probably due to the undifferentiated embryo and hard endocarp. Seedlings had two first foliar structures as scale leaves and the primary root developed, but the adventitious roots were more conspicuous. Vegetative propagation by rhizomes was faster than the sexual one. The roots developed after one month, while young shoots started developing after four to six weeks; young aerial shoots presented a variable number of cataphylls and two protophylls.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Heliconia; Rhizomes; Seedlings; Seed propagation; Vegetative propagation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100011