Method used for dividing hybrid rice parent advantage groups with indica rice and japonica rice specific SSR molecule markers

[0014] The 80 materials include 14 corresponding maintainer lines of indica rice-genetic male sterile lines, 18 light (temperature) sensitive nuclear male sterile lines and 48 restorer lines or conventional varieties (strains), most of which are production extension hybrids See Table 2 for the pedigree and source of the backbone parents of rice. The test materials include three-line sterile lines (wild type, dwarf type, red lotus type), two-line sterile lines, three-line restorer lines, and two-line restorer lines.

[0015] According to the cluster dendrogram of 80 materials ( figure 1 ), according to the different values ​​of GD, they can be divided into five main groups (indicated by I, etc.), twelve subgroups (indicated by A, etc.) and twenty-eight groups (indicated by A1, etc.).

[0016] As can be seen from Table 3, there are five subgroups (A-E groups) in the first large group, and this group includes the main two-line sterile lines (widely accounted for 63S, widely acco...