Cytonuclear Incompatibility Data in Campanulastrum americanum

Dryad hosts a dataset from a study on cytonuclear incompatibility as a driver of speciation in the herbaceous plant Campanulastrum americanum. The research quantifies postzygotic reproductive isolation in first-generation hybrids, with fitness reductions up to 92%, and links incompatibility strength to chloroplast genetic distance. The data was authored by Karen B. Barnard-Kubow and last updated in June 2020.

Use Cases

• Analyze the relationship between chloroplast genetic distance and the strength of cytonuclear incompatibility for survival.
• Model asymmetric reproductive isolation metrics for germination, survival, and pollen viability in plant hybrids.
• Investigate the correlation between plastid genome evolution rates and initial speciation rates using genetic distance data.

Strengths

• Dataset is associated with a peer-reviewed study demonstrating substantial postzygotic reproductive isolation (up to 92% fitness reduction).
• Explicitly measures multiple components of reproductive isolation: germination, survival, and pollen viability.
• Focuses on a clear genetic mechanism (cytonuclear incompatibility) within a specific plant species, Campanulastrum americanum.

Limitations

• Specific data structure, column names, row counts, and file formats are not described in the provided metadata.
• The dataset's temporal and geographic coverage for the plant populations studied is not specified.
• Sample data is unavailable for preview, making initial assessment of data format and completeness difficult.

Provenance

Source

Karen B. Barnard-Kubow

Collection Method

Data from a biological study on hybrid fitness and genetic distance in Campanulastrum americanum.

Freshness

Last updated 2020-06-24.