Respostas de espécies arbóreas a inoculação com fungos micorrízicos arbuscular.

Abstract

Responses of tree species to inoculation with arbuscular mycorrhizal fungi. The purpose of this work was to determine the mycorrhizal dependence of seedlings of species of plants of the caatinga, under different doses of phosphorus and different endogenous and to follow the development of the plants. The experiment was carried out under greenhouse conditions. Ten species of plants were inoculated with three arbuscular mycorrhizal fungi (AMF) (Glomus etunicatum. Acaulosphora Scrobilucata and a community of indigenous AMF, the latter from the caatinga, in the municipality of Patos, PB. And a control without AMF, under two doses of phosphorus (P) in the substrate (30 and 120 mg. dm -3 ), in the form of triple superphosphate. The plant dependence and mycorrhizal efficiency, calculated based on the dry matter production of the aerial part of the seedlings, were evaluated. It was observed that Jurema showed extreme dependence on indigenous fungi, Juca, with G. entunicado and A. scrobiculata. and Angico with A. scrobiculata. Cumaru, Turco, Cauagu and Pata de vaca also responded to inoculation with FMA. Regarding P, all fungi showed higher production in P-low.