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

A genetic linkage map for ridge gourd (Luffa acutangula) constructed by Qin Chen and published on figshare in 2026. The map contains 4,035 representative bin markers across 13 linkage groups, derived from whole-genome resequencing of 144 F₂ individuals. It identifies eight significant QTLs, with a major multi-trait hotspot anchored to a 7.03 Mb interval on chromosome 3.

Use Cases

• Prioritizing candidate genes for early maturity based on the annotated 136 genes within the QTL hotspot.
• Conducting fine-mapping studies using the high-density genetic map containing 4,035 bin markers.
• Designing marker-assisted breeding programs for ridge gourd leveraging the eight identified QTLs.
• Performing comparative genomics analyses using the linkage groups corresponding to chromosomes.
• Validating gene function for prioritized candidates like Lac03g1231 and Lac03g1281 through developmental-stage expression analysis.

Strengths

• High-density genetic map with 4,035 representative bin markers.
• QTL analysis identifies a major multi-trait hotspot anchored to a specific 7.03 Mb genomic interval.
• Dataset is derived from whole-genome resequencing of 144 F₂ individuals and their parents.

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 (5.5 KB), suggesting it contains summary results rather than raw sequence or phenotypic data.

Provenance

Source

figshare

Collection Method

Whole-genome resequencing of parental lines and a 147-plant F₂ population, followed by SNP discovery, binning, and QTL analysis.

Freshness

Last updated 2026-05-28 06:26:10; freshness should be verified.