GBS of Asclepias syriaca
Extracted DNA from freeze-dried leaf tissue samples using the Qiagen DNeasy Plant Kit with slightly modified instructions to increase yield. Samples were dried, shipped to the Elshire Group for library preparation and sequencing using genotyping-by-sequencing (Elshire et al. 2011). The data were generated following a modified version of the protocol described in Elshire et al. (2011).