Genome-Wide SNP Data for 185 Longan Accessions

SNP data from genome resequencing of 185 longan (Dimocarpus longan Lour.) accessions, supporting population genetic analysis. The dataset was created by Hong-Ye Qiu and published in April 2026. It contains high-density markers used to resolve genetic structure and identify candidate genomic regions.

Use Cases

• Classify genetic groups using SNP-based principal component analysis and model-based ancestry estimation.
• Analyze linkage disequilibrium decay patterns to compare haplotype structure among the four identified groups.
• Identify candidate selective sweep regions by scanning for elevated differentiation and reduced diversity, such as the interval on chromosome 11 (17.79–17.98 Mb).
• Assess genetic differentiation and within-group variation from genome-wide diversity metrics.

Strengths

• Data from 185 resequenced longan accessions provides a solid sample for population-level analysis.
• High-density genome-wide SNP markers enable detailed phylogenetic inference and structure resolution.

Limitations

• The dataset is small in file size (32.5 KB), indicating limited raw sequence data or a highly summarized format.
• Specific row counts, column names, and individual SNP values are not provided in the description.

Provenance

Source

figshare, authored by Hong-Ye Qiu.

Collection Method

Generated by resequencing 185 longan accessions and performing variant calling to produce SNP data.

Time Range

null

Freshness

Last updated in April 2026.

Geography

Tropical and subtropical Asia, based on the species' economic importance in the region.