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With support from the NSF Graduate Research Internship Program (GRIP), Chelsea has formed a collaboration with Chris Richards and Pat Reeves at the USDA's National Center for Genetic Resources Preservation (NCGRP) in Fort Collins. Together, they are sequencing transcriptomes from the styles of self-compatible and self-incompatible individuals of Physalis acutifolia to identify the genetic mechanisms responsible for its polymorphic breeding system.  This gave us the opportunity to tour the amazing germplasm collection, much of it stored in a giant multi-story cold room. Some species are also stored as frozen material in vats of liquid nitrogen, including apple stems which can be defrosted and regenerated by grafting to new rootstocks!