This paper deals with characterization of fruits of 13 cultivars belonging to 3 species: Cucurbita moschata Duchesne, Cucurbita maxima Duchesne and Cucurbita pepo Linneu. It was used seeds from controlled pollination. It was considered following characteristics of fruits : epicarp, shape, weight, resistance of the bark, dimensions and thickness of pulp; For seeds were considered: number, dimensions and weight.