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| ZIDKO,Alexsandro; RODRIGUES,Luiz Antônio; MENDONÇA,Cláudia Barbieri Ferreira; ABSY,Maria Lucia; FERREIRA,Marcos Gonçalves; SAMPAIO,Paulo de Tarso Barbosa; ESTEVES,Vania. |
| Abstract The crabwood (Carapa) represents an important source of natural resources. The objective of this work was to study the pollen morphology of the three species of Carapa (Meliaceae) registered in the Brazilian Amazon. The pollen grains were obtained from floral buds, pistillate and staminate flowers of Carapa guianensis, C. surinamensis and C. vasquezii. In order to explore the taxonomic implications of the pollen study for these species of Carapa, lactic acetolysis method was used for light microscopy study. Furthermore, the non-acetolyzed material was used in the study of the scanning electron microscopy. It was found that the three Carapa species present little variations in pollen morphology. Compared to the other species this study, Carapa... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Cedreloideae; Crabwood; Neotropical flora; Palynotaxonomy. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000300333 |
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| MACHADO,Murilo Rezende; CAMARA,Rodrigo; SAMPAIO,Paulo de Tarso Barbosa; FERRAZ,João Baptista Silva; PEREIRA,Marcos Gervasio. |
| ABSTRACT Planting of forest species of timber interest helps to reduce the deforestation pressure on the Amazon forest, promotes sustainable development of the producing region and generates ecological benefits. The objective of this work was to evaluate the survival rate and growth of four native (Swietenia macrophylla, Parkia decussata, Dipteryx odorata and Jacaranda copaia) and one exotic (Acacia mangium) species in monospecific plantations (spacing of 2 x 2 m) established on areas previously used for grazing, in Itacoatiara, State of Amazonas, Brazil. When the trees were four years old, we collected biometric data [height at 1.30 m (DBH, cm), crown projection area (CPA, m2), total height (Ht, m), commercial cylinder volume (Vcyl, m3 ha-1)], and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dendrometric variables; Monospecific plantings; Silviculture; Tree growth. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000100010 |
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