Genebank details

International Institute of Tropical Agriculture

The Genetic Resources Centre of IITA in Ibadan, Nigeria, maintains crops important for sub-Saharan Africa: banana, cassava and yam in the field and in vitro; African yam bean, Bambara groundnut, cowpea, maize, sorghum and soybean, and some other legumes, as seed. Details ofabout 31,000 accessions are available through Genesys.

Cowpea accounts for 16,000 accessions, with about 2000 each of Bambara groundnut and soybean and 1500 of maize. The collection of clonal crops includes almost 4000 accessions of cassava, just over 4000 of yam and 283 of banana. More than half of all the accessions are traditional cultivars or landraces and 1.5% are known to be wild relatives.

Seed crops are kept in conventional genebank storage with medium-term and long-term facilities. Clonal crops are kept in field genebanks and in vitro tissue cultures for short and medium term storage, with an increasing number being brought into cryopreservation for long-term storage.

About 60% of the accessions are safety duplicated at the Svalbard Global Seed Vault. Smaller safety duplicates are held at the Saskatoon Research Centre in Canada and at CIMMYT in Mexico.

Institute code
Type
CGIAR
Country
Accessions in Genesys
Location
Latitude
7.23
Longitude
3.61
Most represented Crops
cowpea
soybeans
cassava
bambara
Other
2,290
Not specified
670
Most represented Crop names
cowpea
17,033
Soybean
4,575
Yam
3,322
cassava
2,573
yam
2,517
Other
6,266
Most represented Genera
Vigna
Dioscorea
Glycine
Manihot
Other
1,271
Most represented Species
Vigna unguiculata
Glycine max
Dioscorea rotundata
Manihot esculenta
Vigna subterranea
Other
6,182
Last updates of passport data
27 May 2020
31 December 2019
30 November 2019
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 36,286 accessions is 5.39, with minimum score of 3.15 and maximum score of 8.15.