Ridge Gourd QTL Hotspot: High-Density SNP Linkage Map for Early-Maturity Traits

A high-density genetic linkage map containing 4,035 representative bin markers across 13 linkage groups was constructed from an F₂ population of 147 ridge gourd plants. Eight significant QTLs were identified, most clustering on LG3, anchored to a 7.03 Mb interval containing 136 annotated genes. The dataset, authored by Qin Chen and last updated in 2026, provides a genetic framework for dissecting early maturity in ridge gourd.

Use Cases

• Fine-mapping candidate genes for early maturity based on the identified 7.03 Mb QTL hotspot interval.
• Conducting developmental-stage expression analysis for prioritized candidate genes Lac03g1231 and Lac03g1281.
• Designing marker-assisted breeding programs using the 4,035 bin markers across 13 linkage groups.
• Performing comparative genomics studies by aligning the ridge gourd linkage map to chromosome 3.

Strengths

• High-density map with 4,035 representative bin markers provides detailed genetic coverage.
• QTL analysis identified a major multi-trait hotspot anchored to a specific 7.03 Mb genomic interval.
• Dataset is based on whole-genome resequencing of 144 F₂ individuals and two parental lines.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset is very small (4.5 KB), suggesting it contains summary or processed results rather than raw sequence data.

Provenance

Source

figshare

Collection Method

Whole-genome resequencing of parental lines and 144 F₂ individuals from a cross, followed by SNP discovery, binning, and QTL analysis.

Freshness

Last updated 2026-05-28 06:26:03; freshness should be verified.