EFFECT OF SHADING ON LEAF ANATOMY OF YOUNG PLANTS OF ANDIROBA (Carapa guianensis Aubl.)

The ability to use light varies between species and the success of each individual depends on his morphoanatomical adaptations. The aim of this study was to evaluate the influence of different light intensities on leaf anatomy of seedlings of Carapa guianensis Aubl. Healthy leaves of the second and third nodes were collected from young plants grown in four levels of shading: 30%, 50%, 70% and 0% (full sun) during the eight months of the experiment. Anatomical analyzes were made under Optical Microscopy (OM), from temporary and permanent slides, and Scanning Electron Microscopy (SEM). The stomatal density showed no significant differences. The dimensions of stomata and thicknesses of the leaf tissue were greater with increasing light intensity. C. guianensis presents anatomical plasticity enabling survival in the forest under different lighting conditions.