Fig. 2.

Neighbor-joining phylogenetic tree of the 51 Amygdalus accessions. The NJ tree altogether with the number, heterozygosity, and Nonsy/sy ratio of SNPs for all the Amygdalus accessions were shown. The NJ tree was generated using P. ledebouriana as the outgroup based on an analysis of a total of 3,909,617 whole-genome SNPs (maf<5%, call rate>90%). Horizontal lines at the center of each box show median values. Bounds of each box show the quartiles. The upper whisker extends to last datum less than Q3 + 1.5*IQR, where IQR is the interquartile range (Q3 - Q1). The lower whisker extends to last datum larger than Q3 - 1.5*IQR. The typical fruit morphology and edibility of all the Amygdalus species and the outgroup species in this study are shown. Fruit images were created by Yang Yu and Shan Gao