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Crop wild relatives, the wild progenitors and closely related cousins of cultivated plant
species, are sources of valuable genetic resources for crop improvement. Persisting gaps
The USDA-ARS National Plant Germplasm System (NPGS) is a coordinated network of 19 genebank locations throughout the United States that perform research to acquire, maintain,
Canada is home to about 5087 species of higher plants of which 25% were introduced to Canada either deliberately or by accident. The richness of botanical species is highest in the southern, more densely settled parts of the country.