Data/hora: 09/06/2024 15:45:17

Provedor de dados: | 3
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

Fonte:

Direitos autorais 2018 Acta Scientiarum. Biological Sciences

http://creativecommons.org/licenses/by/4.0