Data from: The genetic architecture of floral traits in Iris hexagona and Iris fulva
The formation of hybrids among closely related species has been observed in numerous plant taxa. Selection by pollinators on floral traits can act as an early reproductive isolating barrier and may be especially important when there is overlap in distribution and flowering time. In this study, we us...
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Zusammenfassung: | The formation of hybrids among closely related species has been observed
in numerous plant taxa. Selection by pollinators on floral traits can act
as an early reproductive isolating barrier and may be especially important
when there is overlap in distribution and flowering time. In this study,
we use Quantitative Trait Locus (QTL) mapping based on 293 codominant SNP
markers in an F2 population (n = 328) to assess the size, magnitude, and
location of the genetic regions controlling floral traits known to be
important for pollinator attraction in 2 species of Lousiana Irises, Iris
fulva and Iris hexagona. We also evaluate correlations among F2 traits and
identify transgression in the hybrid population. Overall, we observe that
differences in most floral traits between I. fulva and I. hexagona are
controlled by multiple QTLs and are distributed across several linkage
groups. We also find evidence of transgression at several QTL, suggesting
that hybridization can contribute to generating phenotypic variation,
which may be adaptive in rapidly changing environments. |
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DOI: | 10.5061/dryad.fq48q |