The tetraploid genome and clonal propagation of the cultivated potato (Solanum tuberosum L.)1,2 dictate a slow, non-accumulative breeding mode of the most important tuber crop. Transitioning potato breeding to a seed-propagated hybrid system based on diploid inbred lines has the potential to greatly accelerate its improvement3. Crucially, the development of inbred lines is impeded by manifold deleterious variants; explaining their nature and finding ways to eliminate them is the current focus of hybrid potato research4–10. However, most published diploid potato genomes are unphased, concealing crucial information on haplotype diversity and heterozygosity11–13. Here we develop a phased potato pangenome graph of 60 haplotypes from cultivated diploids and the ancestral wild species, and find evidence for the prevalence of transposable elements in generating structural variants. Compared with the linear reference, the graph pangenome represents a broader diversity (3,076 Mb versus 742 Mb).

A phased pangenome of potato constructed from 60 wild and cultivated haplotypes shows that substantial hybridization occurred during domestication and enables identification of many putative deleterious variants, providing a basis for the design of improved inbred lines.

By constructing a graph-based grapevine pangenome reference (Grapepan v.1.0) and incorporating structural variations and phenotypic maps, the study investigates the genetic basis of agronomic traits, ...

A phased pangenome of potato constructed from 60 wild and cultivated haplotypes shows that substantial hybridization occurred during domestication and enables identification of many putative dele...