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Abstract
Plant germplasm is the base for a productive agriculture. It is the genetic raw material required by breeders for the development of new, superior cultivars that can insure a stable, plentiful supply of food, feed, and fiber having desirable qualities. The National Plant Germplasm System (NPGS), a network of public and private workers and facilities around the United States, is the steward for this irreplaceable resource. Over 450,000 samples in the form of seed or growing plants (propagated as clones) are contained within the system; more than 200,000 sub-samples of these are distributed to breeders and other users each year. The collection is expanding at the rate of 7,500 new introductions annually.
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HortScience