Genebank details

Genetic Resources Unit, ICRAF

The ICRAF genebank in Nairobi, Kenya, conserves the diversity of a wide range of agroforestry tree species, most of which are a source of food or forage. Accessions are stored as seed and in field genebanks in the regions where ICRAF works.

The seed genebank currently holds over 6000 accessions of 190 species. Of these, information on 6456 is available through Genesys. Seed is maintained in an active collection at 5°C, and for long-term conservation ICRAF works with the Millennium Seed Bank in the United Kingdom and the Kunming Institute of Botany genebank in China.

Conservation of tree species poses special difficulties, including the large number of genera -- each with specific requirements -- long generation times and seeds that often cannot be dried for conventional storage. As a result, ICRAF has to maintain decentralised field genebanks. These field genebanks both conserve diversity and offer a source of sexual and clonal reproductive material. The field genebanks are also research sites for evaluation and characterisation. Overall, 12,000 accessions of 67 diverse tree and shrub species are maintained in field genebanks spread across 42 sites in 16 countries of which, 6769 Field Genebank accessions  are available through Genesys.

The seed and field genebanks supply germplasm for ICRAF's research to domesticate some species, and to others wanting access to agroforestry plant genetic resources.

About 19% of the seed accessions are safety duplicated at the Svalbard Global Seed Vault. About 8% of the accessions are maintained in long-term storage at Kunming Institute of Botany (KIB) in China.

A database -- the Agroforestry Species Switchboard -- gives access to "information sources to support tree research and development activities".

Institute code
Type
CGIAR
Country
Accessions in Genesys
Location
Latitude
-1.2368
Longitude
36.81906
Most represented Crops
cowage
Not specified
14,751
Most represented Crop names
Wild Loquat
2,927
Marula
1,786
Spiny monkey ball,Natal orange
1,625
African Mesquite
926
Apple-ring acacia
749
Other
6,130
Not specified
609
Most represented Genera
Uapaca
Sclerocarya
Strychnos
Leucaena
Acacia
Other
6,422
Most represented Species
Uapaca kirkiana
Sclerocarya birrea
Strychnos cocculoides
Prosopis africana
Faidherbia albida
Other
6,733
Last updates of passport data
10 November 2020
15 October 2020
12 October 2020
2 October 2020
26 September 2020
25 September 2020
17 June 2020
25 May 2020
26 April 2020
21 April 2020
19 February 2018
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 14,752 accessions is 6.79, with minimum score of 3.50 and maximum score of 7.80.