Leaf Morphological Plasticity of Tree Species from Two Developmental Stages in Araucaria Forest
Carregando...
Data
2014-07-01
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Instituto de Tecnologia do Paraná - Tecpar
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
This study compared the morphological and anatomical variations of the leaves of four shade-tolerant tree species Allophylus edulis (St.-Hil.) Radlk (Sapindaceae), Casearia sylvestris Sw. (Salicaceae), Cupania vernalis Cambess. (Sapindaceae) and Luehea divaricata Mart. (Malvaceae) from a fragment of Araucaria forest in two developmental stages. Morphological and anatomical traits, such as leaf and tissue thickness, leaf area, leaf dry mass, specific leaf area, leaf density and stomata density were measured from 30 leaves of each developmental stage. The phenotypic plasticity index was also calculated for each quantitative trait. The results showed that the four species presented higher mean values for specific leaf area and spongy/palisade parenchyma ratio at young stage, and higher mean values for stomata density, total and palisade parenchyma thickness in the adult stage. The plasticity index demonstrated that L. divricata presented highest plasticity for both the morphological and anatomical traits while A. edulis displayed the lowest plasticity index. The results of this study indicated that the leaves of these species exhibited distinct morphological traits at each stage of development to cope with acting environmental factors.
Descrição
Palavras-chave
Idioma
Inglês
Como citar
Brazilian Archives of Biology and Technology. Instituto de Tecnologia do Paraná - Tecpar, v. 57, n. 4, p. 476-485, 2014.