Fig. 8

The structure analysis of 95 Elymus accessions based on Bayesian inferred from STRUCTURE program with 30 developed EST-SSRs. a STRUCTURE output with K = 2 and K = 8 showing the population structure among 480 Elymus individuals. Different vertical lines represent an individual genotype and different colors represent genetic stock. Besides, the structure analysis among 30 E. sibiricus accessions was performed based on K = 4; (b) The geographic distribution of the 95 Elymus accessions inferred with Structure across K = 8. The pie charts in the map represent the proportion of each accession and the size of each pie is proportional to sample size from 1 to 9 (Table 4); (c) The genetic distance among the StH, StHY and StY genomes. At K = 8, the proportion of each genome was described by using the pies, of which the protruding sectors belonged to the genome itself; (d) The mean ancestry in each of the eight clusters among 14 geographic groups of E. sibiricus and E. nutans. The percentage of the largest proportion was showed in the graph