Genebank details

Pecan Breeding & Genetics, National Germplasm Repository - Brownwood, USDA-ARS
Most represented Genera
Most represented Species
Carya illinoinensis
Carya ovata
Carya texana
Carya aquatica
Carya myristiciformis
Last updates of passport data
28 January 2021
Passport Data Completeness Index (PDCI)
Genesys uses the PDCI as an indicator of the completeness of published passport data. The PDCI uses the presence or absence of data points in the documentation of a genebank accession, taking into account the presence or value of other data points (van Hintum et al. 2011). For example, a wild accession should have a well-defined collection site but no variety name. The PDCI ranges from 0 to 10, where 0 is the minimum score assigned to rather incomplete passport records and 10 is the maximum score assigned to very complete passport records. Any type of accession, wild, landrace, breeding material or modern variety, can attain the PDCI’s maximal score.
Number of passport records
0 1 2 3 4 5 6 7 8 9 10
Passport Data Completeness Index (PDCI)
Average PDCI score for 4,066 accessions is 4.21, with minimum score of 3.25 and maximum score of 6.85.