Variação na dimensão dos elementos de vasos e raios em cinco indivíduos de Goupia Glabra Aubl. – Celastraceae

Abstract

Studies on anatomical variations have been carried out for a century, and many authors affirm that there are variations that can occur among individuals of the same species and within the same tree, due to genetic factors, maturation, age of the tissues, ecological conditions, vigor of the individuals and between adult and juvenile wood. This work aims to verify the axial and radial variation in vessel elements and rays of Goupia glabra. The trees were collected in the Caxiuanã National Forest, from which samples were taken wood discs and from these specimens, in the direction from pith to cambium, every 2 cm. To analyze the length and width of the vessel elements, temporary slides were made with macerated material; and for vessel frequency, ray length in mm, ray length and width in na of cells, histological sections were made. Fifty measurements were taken for each parameter analyzed in each specimen. According to the data analyzed so far, the length and width of the vessel elements do not show a definite pattern of variation and cannot be differentiated between adult and juvenile wood.