Supplementary Material 1: Fig S1. K-mer frequency distribution curve of Illumina short reads for the R. tomentosa genome by GenomeScope. Fig S2. Chromosome karyotype analysis of R. tomentosa. 2n = 2X = 22. Bar = 10 μM. Fig S3. Hi-C contact data mapped to the R. tomentosa chromosome. Fig S4. Merqury assembly spectrum plots for evaluating k-mer completeness to the R. tomentosa chromosome. Fig S5. Comparison of gene models between R. tomentosa with those in other species. Fig S6. Distribution of synonymous substitution levels (Ks) of paralogous (A) and orthologous genes (B). Fig S7. Go analysis of positively selected genes in R. tomentosa. Fig S8. Chromosomal location of TPSs on chromosomes in R. tomentosa.