Genome-wide SNP Data for 185 Longan Accessions

SNP data from 185 longan accessions supports population genetic analysis. The dataset was generated by Hong-Ye Qiu and published on figshare in April 2026. It contains genome-wide markers used to resolve four genetic groups and identify a candidate selective sweep region.

Use Cases

• Perform principal component analysis using SNP data to visualize population structure among the 185 accessions.
• Estimate genetic ancestry and admixture proportions for each accession to infer historical germplasm exchange.
• Calculate linkage disequilibrium decay rates from SNP data to compare haplotype structure across the four genetic groups.
• Conduct genome-wide scans for diversity reduction and elevated differentiation to identify candidate selective sweep regions, such as the interval on chromosome 11 (17.79–17.98 Mb).
• Use SNP-based phylogenetic inference to classify longan germplasm for conservation and breeding programs.

Strengths

• Contains SNP data from 185 longan accessions, providing a substantial sample for population-level analysis.
• Analyses identified a specific candidate selective sweep region on chromosome 11 (17.79–17.98 Mb), offering a concrete target for follow-up study.

Limitations

• The dataset is small in file size (417.7 KB), indicating limited raw data or a highly summarized format.
• Specific column names, row counts for the SNP matrix, and individual accession metadata are not provided in the description.
• The geographic origin of the 185 accessions is unspecified, which limits ecological or regional interpretations.

Provenance

Source

figshare, authored by Hong-Ye Qiu.

Collection Method

Generated by resequencing 185 longan accessions.

Time Range

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Freshness

Last updated April 2026.

Geography

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