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United States Department of Agriculture

Agricultural Research Service

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Plant Collections
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The links on the left provide information about plant collections and how to deposit or request collection material. The following briefly describes the links on the left:

Base Collection: for the National Plant Germplasm System (NPGS):  A brief overview of the seed collections for the NPGS stored at NCGRP with quarterly updated statistics on collection size and diversity.

Vegetatively-Propagated Germplasm: A brief overview of the vegetative-propagated collections stored at the NCGRP.

Security Back-up Storage: Describes the Safety Back-up storage option, which is also called “black-box” storage.

Plant Variety Protection Samples: Describes the process for depositing voucher specimens for Plant Variety Protection and the subsequent release to the National Plant Germplasm System.

Journal of Plant Registrations Samples: Describes the process for depositing voucher specimens required for The Journal of Plant Registrations and the subsequent release to the National Plant Germplasm System.

Trends: Provides a look at yearly statistics on samples received, germination assays performed, etc.

Germplasm Requests: Describes the process for requesting germplasm from collections within the National Plant Germplasm System. 

Germplasm Submissions: Provides forms needed to deposit germplasm at NCGRP.

Protocols - Seeds: Describes procedures used to log in samples, test for viability, and store in NCGRP’s conventional and cryogenic facilities. Vegetatively-propagated germplasm: Describes micro-culture media, cryoprotectant solutions, cryo-exposure and recovery procedures.

U.S. contribution to the Svalbard Global Seed Vault: Describes U.S. initiatives to send NPGS seed to the Svalbard Global Seed Vault in Norway and provides a yearly update of progress. 


For further information about the Plant and Animal Genetic Resources Preservation Research Unit (PAGRPRU)  activities and collections contact: Dr. David Dierig (David.Dierig@ars.usda.gov or 970-495-3265).


Last Modified: 2/22/2013