Identification of cultivar distinctness of five soybean cultivars based on the SNPs discovered by SLAF-seq. (a) The phylogenetic analysis. White circles represent cv. Hedou 13 (HD13), black dots represent cv. Zhonghuang 13 (ZH13), white triangles represent cv. Zhonghuang 18 (ZH18), black triangles represent cv. Zhonghuang 68 (ZH68), white diamonds represent cv. Zhonghuang 35 (ZH35); (b) The principal component analysis. Red: HD13, blue: ZH13, orange: ZH18, purple: ZH68, black: ZH35. The grey shadow indicates the cluster of the cultivar; (c) Heatmap and dendrogram of a stepwise kinship matrix. Colors indicate the cultivars: Red: HD13, blue: ZH13, orange: ZH18, purple: ZH68, black: ZH35.