The invention relates to the technical field of breeding, in particular to a
parthenocarpy breeding method of industrial hemp and application of the
parthenocarpy breeding method. The breeding method of the industrial hemp comprises the following steps: firstly inducing female plants to generate male flowers, carrying out cross seed set on the female plants of different varieties of hemp once, and mixing
genetic materials of two parents; and then screening female single plants integrating excellent characters of the two parents in the filial generation, inducing male flowers to be subjected to
selfing or backcross fruiting, and then repeatedly conducting multi-generation screening and
selfing or backcross till the hemp variety uniform in character and stable in
heredity is obtained. According to the method, a key technology for inducing female hemp plants to generate fertile male flowers and disperse
pollen is developed, normal seeds capable of germinating are generated after unisexual
selfing of the female plants, female
plant selfing breeding and seed
reproduction of the hemp are achieved, all progenies are female plants, all
genetic materials of single-
plant maternal female plants are kept, and the
bottleneck problems of variety shortage and difficult breeding in industrial hemp production are fundamentally solved.