|
|
|
|
|
| Tamaio,Neusa; Vieira,Ricardo Cardoso; Angyalossy,Veronica. |
| The lianas observed in this study, Abuta convexa (Vell.) Diels, Abuta imene (Mart.) Eichler, and Chondrodendron platiphyllum (A. St.-Hil.) Miers, all have successive cambia in their stems. The terminology applied to stem histology in species with successive cambia is as diverse as the interpretations of the origins of this cambial variant. Therefore, this study specifically investigates the origin of successive cambia through a developmental analysis of the above-mentioned species, including an analysis of the terminology used to describe this cambial variation. For the first time, we have identified several developmental stages giving rise to the origins of successive cambia in this family. First, the pericycle originates in 1-3 layers of conjunctive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abuta; Cambial variant; Chondrodendron; Development; Liana. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000400021 |
| |
|
|
| Soffiatti,Patricia; Angyalossy,Veronica. |
| (Anatomy of Brazilian Cereeae (subfamily Cactoideae, Cactaceae): Arrojadoa Britton & Rose, Stephanocereus A. Berger wâBrasilicereus Backeberg). Arrojadoa, Stephanocereus and Brasilicereus are endemic Brazilian Cereeae, occurring along the Espinhaço Range, in the campos rupestres, cerrados and caatingas, from northern Minas Gerais to southern Bahia. The genera are columnar, erect to semi-erect cacti, except for one species, A bahiensis, which is globose. This study describes the anatomy of dermal, fundamental and vascular systems, aiming to find diagnostic characters for the genera and species. Basal portions of stems were sectioned transversely and longitudinally, and stained with Astrablue and Safranin. The species share a uniseriate epidermis,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stem anatomy; Collenchymatic hypodermis; Cereeae; Cactaceae. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062007000400006 |
| |
|
|
| Angyalossy,Veronica; Amano,Erika; Alves,Edenise Segala. |
| A madeira de pau-brasil (Caesalpinia echinata Lam.) é mundialmente empregada na confecção de arcos para instrumentos de corda, uma vez que apresenta características únicas de ressonância, densidade, durabilidade, beleza, entre outras qualidades, que a tornam ideal para tal uso. Diferentes amostras de pau-brasil, contudo, fornecem arcos com qualidades distintas. No comércio nacional outras madeiras estão sendo empregadas na produção de arcos. Realizou-se, neste estudo, uma análise qualitativa e quantitativa de diferentes amostras de pau-brasil com o objetivo de apontar diferenças na estrutura da madeira que possam contribuir para o entendimento das causas da variação na qualidade do arco, além da análise de outras espécies objetivando determinar, do ponto... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomia da madeira; Arcos para violino; Caesalpinia echinata; Pau-brasil; Madeiras substitutas. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062005000400018 |
| |
|
|
| Pace,Marcelo Rodrigo; Botânico,Marli Pereira; Angyalossy,Veronica. |
| Vessel elements in Monocotyledons present morphological differences according to the organ where they occur. Usually such diff erences have been explained from an evolutionary perspective, with few data on how the vessel elements could be infl uenced by the diff erent functions of organs and the growth habits of the plants. To address this question, three vegetative organs of palms of the same genus, Syagrus, growing in similar environments, but with different habits, were analyzed. Accordingly, we aimed to detect whether the vessel elements would present similar features in all species or whether the vessel elements would change according to their different habits. We found that the width and type of perforation plates varied in the same way among all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Monocotyledons; Tracheary elements; Vegetative organs; Growth habit; Root; Stem; Leaf. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200007 |
| |
|
|
|
