INFESTAÇÃO DE ERVA-DE-PASSARINHO EM IPÊS NO INSTITUTO FEDERAL GOIANO – CAMPUS RIO VERDE

Abstract

Bird-plants are plants with evergreen leaves, which do not attach to the host on the branches, where they prepare for the host plant and occupy parts or almost entirely of the canopy. By the emission of special roots (haustorY), which cross the cascade of minerals, remove water and salts. Some mistletoe species are economically important because of what they cause. The extent of damage varies depending on the infestation, the extent of it. Despite the knowledge of the presence of mistletoes in trees used in afforestation and also in fruit trees, little is known about the degree of infestation, as the most attacked hosts and the specificity with hemiparasites. This way with this study the objective is to analyze the infestation of mistletoes in ipês at Instituto Federal Goiano, Campus Rio Verde. All trees (parasitic or not) and hemiparasites in the circulation area of the Instituto Federal, Campus Rio Verde, will be counted and identified. In tree species that present hemiparasitism, the method of Rotta (2001) will be used – Grade 0: no infestation; Grade 1: infestation of less than 50% of the canopy; Grade 2: infestation equal to or greater than 50% of the canopy; and Grade 3: 100% canopy infestation. With this work to identify the abundance of species of ip parasites, Campus Rio Verde and verify if there is an identification with Federal aspects. In addition to observing if there is a specificity of hemiparasitic plants. The presence of mistletoe in the circulation area of the Instituto Federal Goiano, Campus Rio Verde, showed a specialist behavior, parasitizing mainly the species Handroanthus chrysotrichus. Through the morphological evaluations, it was not possible to determine the specificity characteristics of the parasite in relation to the ipê species sampled on the Campus. Thus suggesting that individuals that have a (rough) shell tend to be more parasitized.