Asymmetrical Gene Flow in a Hybrid Zone of Hawaiian Schiedea Species
Author Information
Author(s): Wallace Lisa E., Culley Theresa M., Weller Stephen G., Sakai Ann K., Kuenzi Ashley, Roy Tilottama, Wagner Warren L., Nepokroeff Molly
Primary Institution: Department of Biological Sciences, Mississippi State University
Hypothesis
We hypothesized that the putative hybrids represent hybrids from the two parental species rather than variants of one of the parental species.
Conclusion
The study found evidence of unidirectional gene flow from Schiedea salicaria to Schiedea menziesii, with hybrids exhibiting traits favoring wind pollination.
Supporting Evidence
- Hybrids were most similar to S. menziesii at chloroplast loci.
- Hybrids exhibited nuclear allele frequencies in common with both parental species.
- Traits associated with wind pollination were favored in the hybrid zone.
Takeaway
Scientists studied two types of Hawaiian plants that can mix together and found that one type is better at spreading its pollen, which helps it take over the other type.
Methodology
The study analyzed morphological, nuclear, and chloroplast variation in a hybrid zone between Schiedea menziesii and S. salicaria.
Potential Biases
Potential biases in sampling locations and genetic analysis methods.
Limitations
The study may not account for all environmental factors influencing hybridization.
Participant Demographics
The study focused on two endemic Hawaiian plant species.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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