Data from: Genome sequence of M6, a diploid inbred clone of the high glycoalkaloid-producing tuber-bearing potato species Solanum chacoense, reveals residual heterozygosity

Cultivated potato (Solanum tuberosum L.) is a highly heterozygous
autotetraploid that presents challenges in genome analyses and breeding.
Wild potato species serve as a resource for the introgression of important
agronomic traits into cultivated potato. One key species is Solanum
chacoense and the diploid, inbred clone M6, which is self-compatible and
has desirable tuber market quality and disease resistance traits.
Sequencing and assembly of the genome of the M6 clone of S. chacoense
generated an assembly of 825,767,562 bp in 8,260 scaffolds with an N50
scaffold size of 713,602 bp. Pseudomolecule construction anchored 508 Mb
of the genome assembly into 12 chromosomes. Genome annotation yielded
49,124 high confidence gene models representing 37,740 genes. Comparative
analyses of the M6 genome with six other Solanaceae species revealed a
core set of 158,367 Solanaceae genes and 1,897 genes unique to three
potato species. Analysis of single nucleotide polymorphisms across the M6
genome revealed enhanced residual heterozygosity on chromosomes 4, 8 and 9
relative to the other chromosomes. Access to the M6 genome provides a
resource for identification of key genes for important agronomic traits
and aids in genome-enabled development of inbred diploid potatoes with the
potential to accelerate potato breeding.