Anatomia foliar como ferramenta na identificação de Protium paniculatum Engl. var. riedelianum (Engl.) Daly cultivada em áreas de manejo da empresa Mil Madeiras Preciosas

Abstract

In the forest of terra firme is a great vegetation, as is the case of species of the family Burseraceae. It is estimated that more than 80% of the species of this family found in the Amazon region belong to the genus Protium, which is widely distributed in South America, where it is popularly known as pitch or almecega. Considering the scarcity of studies of the leaf anatomy of the species Protium paniculatum Engl. var. riedelianum (Engl.) Daly in the literature, the objective of the present work was to analyze the anatomy of its leaf to characterize it anatomically so as to contribute to a better identification of the species. The leaf was chosen because it is part of the plant that can complement information existing in the literature, providing new data on its anatomy and physiology. The botanical material used in this work was collected in a forest management area of ​​the company Mil Madeiras Preciosas, in the municipality of Itapiranga / AM. The anatomical analysis was made of the medial portion of the limbus and the petiole of the leaves fixed from cross sections made by the free hand with the aid of a razor blade in a hand microtome. Epidermal cells showing only unicellular and uniseriate tectoric trichomes, fully parenchymal marrow, closed collateral vascular bundle and paracytic stomata were found on the surface of the leaves. It has been found that Protium paniculatum Engl. var. riedelianum (Engl.) Daly presents characteristics similar to other species of the same genus. However, some singularities were observed, such as the absence of glandular trichomes and the presence of paracytic stomata alone. In the central rib the presence of fiber caps was observed, however, they were not found in the petiole, which instigates future studies to contribute with new anatomical data of the species. This information can be considered relevant to help identify the species, contribute to anatomical, logging, pharmacological, industrial and other studies that involve the commercial value of the species.