Arquitetura foliar de Impatiens walleriana Hook. f. (Balsaminaceae)
| العنوان: | Arquitetura foliar de Impatiens walleriana Hook. f. (Balsaminaceae) |
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| المؤلفون: | Sikandra-Lis Fonseca Paulinelli Garcia, Patricia Soffiatti, Maria Regina Torres Boeger |
| المصدر: | Acta Scientiarum. Biological Sciences. 31 |
| بيانات النشر: | Universidade Estadual de Maringa, 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Lamina, Leaf width, biology, Botany, Curitiba, Vegetation, Understory, General Agricultural and Biological Sciences, biology.organism_classification, Impatiens walleriana, General Biochemistry, Genetics and Molecular Biology, Petiole (botany), Divergence |
| الوصف: | The leaf architecture, defined as the tri-dimensional organization of the leaves on the stem axis, influences the plant capacity to intercept sun light. This study investigated the leaf architecture of Impatiens walleriana, a species of the understorey of forests, to evaluate the existence of variation among distinctive positions of the leaves and identify the morphological characteristics that influence the leaf overlapping and, consequently, the process of light capture. Thirty plants, under the same light condition, were collected in a remnant of “Floresta Ombrofila Mista” (25o25’S e 49o17’W), in Curitiba, Parana. Leaf width, leaf length, lamina thickness, leaf area, petiole length, leaf angles, and divergence angles were measured. The mean values of leaf angles, divergence angles, and petiole length varied significantly in relation to leaf position. Apparently, leaf overlapping is minimized by the synergic effect of leaf angles, divergence angles, elliptic form of the lamina, and long petioles, which, together, allow for a spatial organization around the stem axis, where most leaves can receive the difuse light at the understorey forest. These morphological characteristics, associated with reproductive strategies, appear to be responsible for this species´ success on the colonization of disturbed understorey, replacing native vegetation. |
| تدمد: | 1807-863X 1679-9283 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::47f6b2f71dc601162b7373b1952f2d0aTest https://doi.org/10.4025/actascibiolsci.v31i1.935Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........47f6b2f71dc601162b7373b1952f2d0a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1807863X 16799283 |
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