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Soybean Parentage Information

The soybean parentage information in this database was partially gleaned from the Uniform Soybean Tests for the Southern and Northern regions as well as other sources such as USDA technical bulletins, variety registrations and PVP applications. The strains that appear here were part of the uniform trials and not the preliminary trials. In most cases, the pedigree of individual strains was followed back to named strains in both maternal and paternal lineages where possible. In some cases, the parentage of strains was not specified by the cooperators in the tests. In those cases the maternal and paternal parents are labeled as "Unspecified". In some cases, the actual parental information is partially or completely unknown. In those cases the unknown parentages is labeled with "Unknown". When available, synonyms for the strains were also collected. If a strain was named its PI number was also included as a synonym. In cases where the strain was found to be covered by PVP protection, the PVP registration number was also included. Because of the sources used, not all named soybean strains are listed. For additional information the user should consult the Germplasm Resources Information Network (GRIN) search page.

Strain names are prefixed with a code that identifies the program that produced them. The code is usually the first two letters in the strain name followed by the year it was released as a two digit number. A description of the code prefixes can be found here. Strains originating from Pioneer Hybrid generally begin with the letter "P" followed by 4 digits ie P2345. Some Pioneer strains have names of the form P followed by two digits followed by one letter followed by two digits ie P49M23.

We welcome submissions by the community of new or updated pedigree information. Please use this data submission Excel spreadsheet to submit your pedigree data.


To find the immediate parents of a line or cultivar, type the cultivar name or strain indentifier in the box below. Reset

To limit the list below to either Northern or Southern strains, choose a region.

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Looking for a specific strain or cultivar?Click here to download all parentage information.
Browse the P Section of Alphabetical Strain List
Browse Full Alphabetical List of All Strains

Record for Cultivar Pioneer P4280

CultivarSynonymsMaternal Parent X Paternal ParentCommentGoogle Search (New Window)
Pioneer P4280 PI 556589
Williams X WoodworthPioneer Hi-Bred International, Inc., PVP 8000024Scour Google For This Line

Records=7 Containing Pioneer P4280

CultivarSynonymsMaternal Parent X Paternal ParentComment
PI 556871 Pioneer P9501
[ ( Swift x Williams ) x 3481X [ ( Williams x GP9 ) x Pioneer P4280 ]Pioneer Hi-Bred International, Inc., PVP 8800166
PI 592548 Pioneer P9481
( Pioneer P4280 x FayetteX Asgrow A4715Pioneer Hi-Bred International, Inc., PVP 9600064
PI 656364 Pioneer P94Y80
[ ( Pioneer P4280 x Fayette ) x Asgrow A4715X [ ( ( ( Pioneer P4280 x Fayette ) x Asgrow A4715 ) x Asgrow 3431 ) x Pioneer 94B73 ]Pioneer Hi-Bred International, Inc., PVP 200900158
Pioneer P9481 PI 592548
( Pioneer P4280 x FayetteX Asgrow A4715Pioneer Hi-Bred International, Inc., PVP 9600064
Pioneer P94Y80 PI 656364
[ ( Pioneer P4280 x Fayette ) x Asgrow A4715X [ ( ( ( Pioneer P4280 x Fayette ) x Asgrow A4715 ) x Asgrow 3431 ) x Pioneer 94B73 ]Pioneer Hi-Bred International, Inc., PVP 200900158
Pioneer P9501 PI 556871
[ ( Swift x Williams ) x 3481X [ ( Williams x GP9 ) x Pioneer P4280 ]Pioneer Hi-Bred International, Inc., PVP 8800166
Y4667-09 Pioneer P4280 X Fayette






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