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United States Department of Agriculture

Agricultural Research Service

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Walters, Christina T
Supervisory Plant Physiologist
(970) 495-3202
Fort Collins CO 80521

The Plant Germplasm Preservation Research Unit (PGPRU) is an integral part of the USDA National Plant Germplasm System (NPGS) and is charged with improving current genebanking operations. PGPRU develops strategies and technologies to increase the efficiency and effectiveness of plant genebanks. Our research • Conserves genetic diversity of plant populations, as well as genes and specific genotypes in diverse germplasm forms (e.g., seeds, plant cuttings, pollen). • Develops techniques, especially cryopreservation in liquid nitrogen, to keep germplasm alive and healthy. • Invents new ways to predict and detect changes in health and genetic integrity of preserved germplasm. • Analyzes plant germplasm collections to find redundancies and gaps in diversity. • Combines habitat, provenance and genomic data to identify accessions with hidden, valuable genes. PGPRU shares our innovations globally, supporting a network of genebanks that collectively preserve genetic diversity for an ever changing world.

Federal Staff  
Christina Walters, PhD
Gayle Vok, PhD
Christopher Richards, PhD
Ann Reilley
Patrick Reeves
Stephanie Kessinger
Stuart Hardegree
Lisa Hill
Adam Henk
Marianne Cruikshank
Jennifer Crane
Remi Bonnart

Colorado State Universtiy Staff
Ashley Sheperd

Visiting Scientists

DuHyun Kim, South Korea
Marcin Michalak, Poland
Beata Plitta, Poland
Thormann, Imke
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