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| National
Plant Germplasm System |
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Helps and Hints
To Submit a Query
- To use this form, enter search criteria into one or more of the fields.
Wild cards (*) are accepted. Press the "Submit Request" button at the
end of the form, to obtain your results.
Accession Identifiers
PI numbers
- The PI (Plant Introduction) number is a serial number assigned to an
accession. It is the main identifier of the National Plant
Germplasm System.
PI 1 was assigned in 1898. A PI number from December of 1999 was 612204.
Non-PI numbers
- Material under evaluation or in Quarantine, have temporary site
identifiers
(e.g., Grif 1234). Accessions with these identifiers are less likely to
be available for distribution.
Other Identifiers
- These identifiers distinguish accessions by something
other than the accession identifier.
Searches in this area are punctuation and case insensitive. Whenever you
are unsure of spelling, use the wildcard (*) as shown below.
Some examples of these other identifiers are:
- Cultivar name (e.g., Red Jewel or Red J*)
- Breeder identifier (e.g., RW 1234)
- Collector identifier (e.g., DW 1234)
- Institute identifier (e.g., VIR 543555)
- Plant Variety Protected material (e.g., PVP 100050)
- Other identifier (e.g., Q 1234)
Pedigree
- In a large crop, this search takes time. Go get a cup of coffee and
then look for the results.
It is generally best to specify the scientific name (taxon) to speed up your
search.
Taxonomy
Taxon
- Scientific names are not case sensitive.
- Synonyms are not accepted here. You will be told to try again
with a different name or spelling.
- A wild card (*) is automatically placed at the end of whatever you type
into the Taxon field, so that a search for Zea mays will include
Zea mays ssp. mays
- If you are having trouble, try finding the name
first in the Taxonomy
Query form.
Common names
Common names are case sensitive. If you have trouble finding your
results, go to the Taxonomy
Query form.
Location
- This query searches for the country of origin.
Additional Criteria
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- If you want to specify a year, enter a 4-digit year.
- Specifying the current year, previous year or specific year will be slow
if you don't restrict the search by taxonomy or country.
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