PERSEUS

PERSEUS visualizes pedigrees as directed graph networks using a force-repulsion layout to explore genetic relationships among accessions and to trace phenotypic traits to ancestral donors.

Key Features:

• Directed graph pedigree representation: Pedigrees are represented as directed graph networks with nodes corresponding to individuals or accessions.
• Force-repulsion layout: A force-repulsion method is used to distribute nodes in the network for clearer visualization of relationships.
• Trait search and export: Phenotypic traits can be searched along pedigrees and exported for downstream analysis.
• Trait tracing to ancestors: The system supports tracing phenotypic traits back to ancestral donors within the pedigree graph.
• Support for genomic selection and prediction analyses: Visualizations and trait data are provided to aid genomic selection and prediction workflows.
• Applicability to accessions and germplasm collections: Designed to represent and analyze relationships among accessions in breeding programs and germplasm collections.

Scientific Applications:

• Breeding program analysis: Exploration of pedigree relationships and trait inheritance to inform selection decisions in breeding programs.
• Germplasm curation and management: Analysis of lineage and trait provenance within germplasm collections and accession catalogs.
• Evolutionary and genealogy studies: Investigation of genealogical relationships and lineage histories among related individuals or species.
• Genotypic and phenotypic diversity analysis: Assessment of diversity patterns across accessions using pedigree and trait information.
• Trait provenance and donor identification: Identification of ancestral donors contributing specific phenotypic traits.

Methodology:

Pedigrees are represented as directed graph networks with nodes as individuals and laid out using a force-repulsion algorithm; interactive network exploration and trait search/export functionality are provided.