| Summary: | The data deposited here is associated with a scientific paper. The data include phylogenies (Newick format), DNA alignment files (Fasta format), morphological dataset (TXT format), Principal Component Analysis files, reference files (Fasta, Fai and Dict formats) and scripts (Bash and R languages). The abstract of that paper is:
The origin of sweetpotato is poorly understood. To address this problem, it is necessary to identify the closest tetraploid relative of sweetpotato so that the origin of its hexaploid genome can be determined. We integrate morphological, phylogenetic, and genomic analyses of herbarium and germplasm accessions of the hexaploid sweetpotato, its closest known diploid relative Ipomoea trifida, and various tetraploid plants closely related to them. We identify wild autotetraploid plants from Ecuador that are morphologically distinct from I. batatas and I. trifida, but monophyletic and sister to I. batatas in phylogenetic analysis of nuclear data.We describe this new species, the sweetpotato’s closest tetraploid wild relative, as Ipomoea aequatoriensis T.Wells & P.Muñoz sp. nov.; distinguish it from hybrid tetraploid material collected in Mexico; and show that it likely played a direct role in the origin of sweetpotato’s hexaploid genome. This discovery transforms our understanding of sweetpotato’s origin.
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