In an attempt to eliminate the trouble of hand emasculation from the hybridization work in pepper, possibility of emasculation with a gametocide was examined. Mie Midori, a cultivar of sweet pepper, was used in this experiment. Anther dehiscence was completely suppressed by foliage spray of 250 and 1250 ppm aqueous solutions of sodium 2, 2-dichloropropionate (Dalapon). Suppression of anther dehiscence started about two weeks after treatment. Toxic effects to foliage and to plant growth were not severe while abnormal expansion of ovaries and bending of styles were accompanied with the suppression of anther dehiscence in a considerable number of flowers. The implications of these functional and morphological changes for hybrid seed production are discussed.