This invention relates to: a method for controlling the sexuality of hop, comprising applying a chemical to a hop female plant once or more and forming a fertile male flower capable of forming pollen on the female plant, wherein the chemical reduces a reaction with endogenous ethylene in the female plant； an embryo or seed, hop plant, and cone, capable of being obtained through the method； a method of screening for a hop plant； and a method of producing a hop plant variety.
