The application belongs to the technical field of genetic breeding, and specifically discloses a method for constructing a pure line of ptilophogus percussor, which mainly utilizes
microsatellite amplification,
gene sequencing and
typing, and family grouping after analyzing the
genetic structure of a group; finally, after expansion, subculture, and two generations, the
inbreeding coefficient is calculated, and if the
inbreeding coefficient is less than 0.01 and the
inbreeding increment of generations is less than 0.003, it is indicated that the construction of the pure line is successful. Compared with the prior art, the application can quickly homozygous ptilophogus percussor, keep the purity of the genetic resource variety, guarantee the genetic polymorphism of ptilophogus percussor, lay a foundation for genetic
resource protection, effectively avoid the inbreeding depression of ptilophogus percussor, and lay a foundation for the development and utilization of ptilophogus percussor
genetic resources and the cultivation of new matching lines.