Essential oils, chemical stimulation of resin and occurrence of galls in three Amazonian species of Protium

Protium is the most frequent genus of Burseraceae in Adolpho Ducke Forest Reserve (Manaus, Amazonas), which where its species were previously identified and mapped this has favored various studies central Amazon forest. A number P. divaricatum Engl., opacum Swart strumosum Daly trees selected with objective providing information about their chemical biological aspects. Resin exudation was stimulated use ethephon essential oils from aerial parts resin evaluated using GC. The occurrence galls also registered. hydrocarbon sesquiterpene ß-caryophyllene detected high percentages leaves twigs (52.75% 14.74%) (39.55% 17.86%), respectively. predominant oxygenated sesquiterpenes spathulenol (19.52%) (31.29%) divaricatum, addition to khusimone (32.36%) opacum. Monoterpenes resin, p-cymene (58.97%) predominating naturally exuded limonene (61.45%) p-cimen-8-ol (53.92%) first second extraction ethephon, On trees, that will help identification three species.