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
maize
Other
3,372
Not specified
916
Most represented Crop names
cowpea
16,914
Soybean
4,928
cassava
3,741
Yam
3,460
yam
2,550
Other
9,165
Most represented Genera
Vigna
Dioscorea
Glycine
Manihot
Other
1,819
Most represented Species
Vigna unguiculata
Glycine max
Manihot esculenta
Dioscorea rotundata
Zea mays
Other
7,837
Biological status of accession
Traditional cultivar/Landrace
Other
Wild
Breeders Line
Breeding/Research Material
Other
258
Not specified
5
Provenance of material
Nigeria
Benin
India
United States of America
Cameroon
Other
14,804
Not specified
1,252
Type of Germplasm storage
Seed collection
Medium term seed collection
Long term seed collection
Field collection
In vitro collection
Curation type
Fully curated
Not specified
364
Breeder code
NGA039
BFA017
Not specified
40,724
Site of safety duplication
NOR051
Not specified
22,444
Safety duplicated in Svalbard
Not in SGSV
Backed up in SGSV
ITGPRFA Multi-lateral system
Accession is part of the Multi-lateral system of ITPGRFA
Not specified
1,582
Available for distribution
Available for distribution
Not available for distribution
Not specified
3,861
Recent subsets
Last updates of passport data
30 April 2024
18 March 2024
12 March 2024
11 March 2024
22 January 2024
30 December 2023
21 December 2023
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.
Average PDCI score for 40,793 accessions is 6.76, with minimum score of 3.30 and maximum score of 8.65.