|
|
|
|
|
| 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 |
| |
|
|
| FERREIRA,Débora Najara de SOUZA; CAMARGO,José Luís Campana; FERRAZ,Isolde Dorothea Kossmann. |
| ABSTRACT Polyembryony is the differentiation and development of multiple embryos in a single seed. This characteristic can provide advantages, as more than one embryo is produced with the same amount of resources, and the probability of establishment of at least one seedling increases. However, sibling seedlings may also increase competition, affecting development and survival. In the present study, the possible advantages and disadvantages of polyembryony were analyzed in the initial establishment of seedlings of Carapa surinamensis (Meliaceae), a tree species that produces monoembryonic or polyembryonic seeds. In this regard, the development of single seedlings was compared with a pair of seedlings emerging from polyembryonic seeds. We compared the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Polyembryony; Andiroba; Crabwood; Seedling production; Competition. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000200097 |
| |
|
|
|
