Data from: Strongly asymmetric hybridization barriers shape the origin of a new polyploid species and its hybrid ancestor

Mario Vallejo-Marin, Arielle M. Cooley, Michelle Yuequi Lee, Madison Folmer, Michael R. McKain & Joshua Robert Puzey
PREMISE OF THE STUDY: Hybridization between diploids and tetraploids can lead to new allopolyploid species, often via a triploid intermediate. Viable triploids are often produced asymmetrically, with greater success observed for “maternal-excess” crosses where the mother has a higher ploidy than the father. Here we investigated the evolutionary origins of Mimulus peregrinus, an allohexaploid recently derived from the triploid M. ×robertsii, to determine whether reproductive asymmetry has shaped the formation of this new species. METHODS:...
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