Table 1. Results of QTL mapping in Louisiana Irises summarizing expected and unexpected findings in terms of patterns of introgression in different habitats.

	Expected results	Unexpected results
Drier greenhouse common garden	Iris brevicaulis BC1 individuals survived at a higher rate than did Iris fulva BC1 individuals. Introgression of three genomic loci from I. brevicaulis into I. fulva BC1 individuals is associated with increased survival	I. fulva alleles increased fitness of I. brevicaulis BC1 individuals. An I. fulva QTL was associated with higher survival in I. fulva BC1 individuals. I. fulva alleles introgressed into I. brevicaulis BC1 individuals at a higher frequency than expected under a neutral model
Flooded natural area common garden	I. fulva parents and BC1 individuals survived at a significantly higher rate than did I. brevicaulis parents and BC1 individuals. The I. brevicaulis BC1 individuals who survived had significantly more I. fulva alleles than did those that did not survive	A QTL associated with higher survivorship in I. fulva BC1 individuals is associated with alleles from dry-adapted I. brevicaulis

Abbreviation: BC₁, first-generation backcross.