The present study aimed to evaluate the influence of the arbuscular mycorrhizal fungi (AMF) inoculation on the vegetative growth, macronutrients and carbohydrate contents in rootstock plants of peach 'Okinawa'. The experiment was realized at greenhouse conditions and a randomized block design was applied, with 20 plants per plot and four repetitions. Three AMF species (Acaulospora sp., Glomus clarum e Glomus etunicatum) and non-inoculated treatment were tested. The stem height and diameter, foliage area, fresh and dry biomass, macronutrients and carbohydrate contents were evaluated 360 days after the sowing. All the AMF inoculated plants presented bigger stem height and diameter, when compared to the non-inoculated, and Acaulospora sp. rendered the best results. G. clarum and G. etunicatum induced an intermediate and similar response of the plants. AMF favored the nitrogen, phosphorus and potassium absorption, contributing to the best plant responses regarding to stem height, diameter, foliage area, fresh and dry mass of the stem and dry mass of the roots, when compared to the non-inoculated plants. All inoculated AMF plants had high colonization rate, above 90%, and Acaulospora sp. colonized the root system of the plants most intensely.
Prunus persica; endomycorrhizaes; plant propagation; growth; nutrition
