plant evolution
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Pedicularis

Pedicularis

 
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Pedicularis is a spectacularly diverse genus of flowering plants in the Hengduan Mountains of south-central China.

Phylogenomics in Pedicularis ser. Longiflorae: I am assembling genomes for ten species in Pedicularis ser. Longiflorae to study of the effect of recombination map variation and species tree parameters on genealogical variation along chromosomes. For each of the ten species I am inferring a recombination landscape using modern population genetic inference methods (eg iSMC) with low-coverage resequencing data. I am combining these recombination landscapes with species tree parameters inferred with existing methods. I plan to apply new methods like Argweaver-D to incorporate the species tree models and recombination landscapes, inferring ancestral recombination graphs and identifying sites in the genome that are introgressed or under selection.

Divergence in floral morphology between populations of P. cranolopha

Divergence in floral morphology between populations of P. cranolopha

Reproductive isolation in P. cranolopha: Divergent morphologies between populations of P. cranolopha might lead to reproductive isolation by affecting placement of pollen on its bumblebee pollinators. I planned a field experiment using quantum dots to test pollen movement within populations vs. between populations with different floral morphologies. This experiment failed because of technical issues, but I hope to attempt it again in the future.