The aim of this work was to study, in glasshouse conditions, the effect of arbuscular mycorrhizal fungi (AMF) inoculation on plant growth and fruit quality of chili pepper cv. Cacho de Cabra when plants were transplanted to a sterile (SS) and unsterile substrate (NSS) composed by a mixture of soil-sand- vermiculite. Inocula were Glomus claroideum and a mixture of native HMA strains which were compared with a control. Twice a month, height and flower number and nutritional and chemical fruit characteristics were measured. In SS both HMA inocula increased shoot and root weight and diameter and weight of fruits. Maturation period was also reduced. Under the studied conditions the strains used showed compatibility with host plant which suggests that an effective inoculation of this vegetable could greatly improve its usefulness in industrial processes.