East Asia is an important region of sweetpotato production and consumption. To promote exchange among scientists studying sweetpotato in East Asia, the Trilateral Research Association of Sweetpotato (TRASTrilateral Research Association of Sweetpotato (TRAS)) was established in 2004 by sweetpotato scientists from China, South Korea, and Japan. The TRASTrilateral Research Association of Sweetpotato (TRAS) genome sequencingGenome sequencing consortium was formally launched in 2014 and established a haploid-resolved and chromosome-scale de novo assemblyAssembly of autohexaploid sweetpotato genomeGenome sequences. Before constructing the genomeGenome, we created chromosome-scale genomeGenome sequences in Ipomoea trifida using a highly homozygous accession, ‘Mx23Hm’, with PacBio RSII and Hi-C reads. Haploid-resolved genomeGenome assemblyAssembly was performed for the sweetpotato (I. batatas) cultivar ‘Xushu 18’ by hybrid assemblyAssembly with Illumina paired-end (PE) and mate-pair (MP) reads, 10X genomicsGenomics reads, and PacBio RSII reads. Then, 90 chromosome-scale pseudomolecules were generated by aligning the scaffolds onto a sweetpotato linkage mapLinkage map. In total, 34,386 and 175,633 genes were identified on the assembled nucleic genomesGenome of I. trifida and sweetpotato, respectively. The assembled genomeGenome sequences have been used for genetic and RNA-Seq analysis for agronomically important traits. The assembled genomeGenome sequences are expected to continue to contribute to genetic and genomicGenomics analysis and promote sweetpotato breeding.