Fig. 1.

Phylogeny and structure variation in peach. a Geographic distribution of 336 peach accessions, represented by dots of different colors. b Principal component analysis (PCA) of ornamental, landrace and improved accessions using SVs. Different color dots represent the accession as in a. c Phylogenetic tree and population structure of 336 peach accessions using SVs. Different branch colors in the phylogenetic tree represent different groups, same as in a. d Simulations of the increase in number of SVs detected with the increase of accessions. The blue line is the fit curve of data points (light green). e SV density of different sizes for each SV type