| Registro completo |
| Provedor de dados: |
Biological Sciences
|
| País: |
Brazil
|
| Título: |
Leaf architecture and symmetry of understory tree species of an Araucaria forest
|
| Autores: |
Boeger, Maria Regina Torres
Pilatti, Daiane Maria
Lima, Carolina Sereneski de
Alvarenga, Allan Mauricio Sanches Baptista de
Pereto, Suelen Cristina Alves da Silva
|
| Data: |
2018-11-30
|
| Ano: |
2018
|
| Palavras-chave: |
2.03.00.00-0
2.03.02.00-2. ombrophilous forest
Asymmetry index
Leaf morphology
Shade leaves
Light efficiency. Botânica
Morfologia Vegetal
|
| Resumo: |
Shade plants of ombrophilous forests are subjected to light-limiting conditions and need to invest in architectural structures associated with leaf symmetry to increase light capture. This study investigated the leaf architecture of six Araucaria forest tree species with distinct symmetry: Cupania vernalis, Casearia sylvestris, Schinus terebinthifolius, Piper gaudichaudianum, Roupala brasiliensis and Cedrela fissilis. We hypothesized that symmetry, associated with other traits, minimizes self-shading. Asymmetry index, petiole length, total leaf area, leaf angle, internode length and stem diameter were measured. The asymmetry index did not indicate a clear distinction between asymmetric and symmetric leaves. Leaves classified as asymmetric had higher values for the asymmetry index in the median and basal regions of the leaf, while symmetrical leaves had higher values in the apical region. The results also indicated an adjustment among structural leaf traits that facilitated a three-dimensional organization that produced an advantageous arrangement for light capture, which seems to be a response to selective pressure by the heterogeneous light conditions of the ombrophilous forest understory.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43118
10.4025/actascibiolsci.v40i1.43118
|
| Editor: |
Universidade Estadual De Maringá
|
| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43118/pdf
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/43118/18769
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/43118/18770
|
| Formato: |
application/pdf
|
| Fonte: |
Acta Scientiarum. Biological Sciences; v. 40 (2018): Publicação Contínua; e43118
Acta Scientiarum. Biological Sciences; v. 40 (2018): Publicação Contínua; e43118
1807-863X
1679-9283
|
| Direitos: |
Direitos autorais 2018 Acta Scientiarum. Biological Sciences
http://creativecommons.org/licenses/by/4.0
|
