In some species, seedlessness is the result of "parthenocarpy", where fruits set without fertilization. Some flowers produce diaspores without fertilization (parthenocarpy). For fruit with unfertilized seeds, exogenous auxin results in parthenocarpy ("virgin-fruit" growth). However, parthenocarpy of some fruits on a plant may be of value. Parthenocarpy is known to occur in certain cultivars of "C. pepo".