Peanut Introgression Line Population for Breeding with Wild Relatives

A structured introgression line population for cultivated peanut (Arachis hypogaea) was constructed by Emile C. Barnes to facilitate breeding with wild relatives Arachis batizocoi and Arachis stenosperma. The population consists of 32 lines designed to maximize genome coverage across the allotetraploid genome, with complementary introgressed segments averaging 34.7 Mbp in size. It covers 60.1% of polymorphic markers from A. stenosperma and 34.8% from A. batizocoi, and phenotypic diversity is demonstrated for traits like disease resistance and plant height.

Use Cases

• Mapping disease resistance traits based on the described introgression segments.
• Studying the genetic basis of plant height variation using the structured population.
• Identifying genomic regions from wild relatives associated with abiotic stress tolerance.
• Developing molecular markers for peanut breeding programs based on the covered polymorphic markers.

Strengths

• Population includes 32 structured introgression lines.
• Introgression segments have a mean size of 34.7 Mbp, providing substantial genomic coverage.
• Covers 60.1% of polymorphic markers from A. stenosperma and 34.8% from A. batizocoi.
• Phenotypic diversity is demonstrated for specific traits like disease resistance.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is stored in a single 834.1 KB XLSX file, indicating a very limited scope.

Provenance

Source

figshare

Collection Method

Constructed through interspecific hybridization and genomic analysis.

Freshness

Last updated 2026-05-01 05:28:08; freshness should be verified.