Extended Data Fig. 1: Evaluations of genome assemblies.

a. Assembly size before and after haplotype phasing of ten potato varieties, as compared with k-mer-based genome size estimates. b. Total contig size of chromosomes of initial and phased assemblies as compared with the reference genome. As a comparison, for example, chromosomes 3,6,7,10 after phasing (in orange) were clearly more complete than those before phasing (in dark blue). Note, as the total size of initial contigs aligned to each reference chromosome included contigs mixed from four haplotypes, the average size (i.e., the total size divided by four) was used to represent the initial assembly size of a haplotype chromosome. c. Base accuracy and completeness of ten tetraploid genome assemblies calculated by Merqury23. d. BUSCO24 evaluation of 40 haploid genome assemblies, based on the genome assemblies and the protein-coding gene annotations.