Inoculation of Arbuscular Mycorrhizal Fungi Isolated from Peach Orchards and Vineyards in Aldrighi Peach Rootstock Plants

Abstract

Arbuscular mycorrhizal fungi species (AMFs) present intraspecific differences in the ability to stimulate plant growth and depend on genetic and environmental factors involved among the biotic agents. This work aimed to evaluate the influence of the AMFs Glomus clarum and G. etunicatum isolated from peach orchards and vineyard on the vegetative growth, content of nutrients and carbohidrate contents on Aldrighi peach rootstocks plants. The experiment was conducted in a greenhouse, with a split-plot experiment, with 15 plants per plots and four repetitions. The plants inoculated with AMFs had higher responses in height, diameter, leaf area, fresh and dry biomass of shoots and content of reserves, due to the increased absorption of nitrogen, phosphorus and potassium in excess of non-inoculated plants. Data were submitted to analysis of variance using the Statistical Analysis System (SAS) program and the means were compared using Duncan's test at a 5% significance level. Simple correlation analyzes were performed using Pearson's correlation coefficient (r) with maximum values represented by r = 1 and r = -1. All AMF isolates benefited the Aldrighi peach rootstock plants, accelerating vegetative development and increasing macronutrient content. The study showed a correlation between root colonization and the increase in plant development parameters. The symbiosis efficiency was higher with isolates from peach orchards, when compared with isolates from grapevine orchards.