Method for constructing basic population library for crop domestication breeding by using natural population

The invention discloses a method for constructing a basic population library for crop domestication breeding by using natural populations. The first aspect of the invention provides a method for screening library building species of a basic population library for crop domestication breeding. The method comprises the following steps: obtaining target species of crops; performing phylogenetic analysis on the target species according to the genome marker; according to a phylogenetic analysis result, clustering the target species by using morphological characteristics to obtain a plurality of groups; acquiring species information of parents of hybrid seeds of crops, and screening out groups containing the parents of the hybrid seeds from a plurality of groups; and screening the groups according to the breeding ecology characteristics to obtain database building species. In this way, the appropriate library building species are screened out, the original population is rapidly and effectively built, the time for re