Slovenian Onion Germplasm with Genetic and Phenotypic Data for 243 Genotypes

A 2026 study by Lovro Sinkovič analyzed 243 onion genotypes from the Slovenian Plant Gene Bank. The dataset combines cytoplasmic markers, nuclear SSR and ILP markers, and phenotypic descriptors to evaluate the relationship between genetic structure and traits like bulb size. Findings indicate significant population structure but limited predictive power of genetics for multi-trait performance.

Use Cases

• Assessing genetic diversity and population structure in onion collections based on nuclear SSR and ILP markers.
• Investigating the correlation between genetic ancestry and phenotypic traits like bulb diameter and morphology.
• Evaluating the utility of gene bank accessions for breeding programs using the described Selection Index values.

Strengths

• Includes data for 243 onion genotypes from 60 accessions and three reference cultivars.
• Combines multiple data types: cytoplasmic markers, nuclear markers (SSR, ILP), and phenotypic descriptors.
• Analysis identified three distinct nuclear genetic clusters with significant phenotypic differences (PERMANOVA R²=0.274).

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 small in scale (945.2 KB), indicating limited scope.

Provenance

Source

Slovenian Plant Gene Bank (SRGB) onion collection.

Collection Method

Laboratory analysis of cytoplasmic and nuclear markers combined with phenotypic evaluation.

Freshness

Last updated 2026-06-03 06:06:57; freshness should be verified.

Geography

Likely Slovenia, based on the source gene bank.