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International Maize and Wheat Improvement Center (CIMMYT)

Wellhausen-Anderson Genetic Resources Collections

CIMMYT manages diverse collections of maize and wheat.

A CIMMYT technician counts maize seeds in the CIMMYT genebank.
A CIMMYT technician counts maize seeds in the CIMMYT genebank. Credit: Getty Images Reportage photographer Juan Arrendodo

The wheat collection numbers about 150,000 accessions from more than 100 countries, and consists of bread wheat, durum wheat and triticale landraces, cultivars, genetic stocks, breeders’ materials and wild relatives. The maize collection of 28,000 accessions includes the world’s largest collection of maize landraces, created and maintained by farmers over many generations, as well as wild teosinte and Tripsacum wild relatives of maize.

CIMMYT is actively assessing the diversity of the maize and wheat seed collections using genomics technologies. Developing links between accession data and data from breeders are another focus of work. The genebank has been a pioneer in using GRIN-Global and in establishing a QMS. Several operations are certified to ISO 9001:2008 standard.

The Seed Health Unit ensures that all seed conserved in the genebank, as well as any seed imported to or exported from any of CIMMYT’s research locations, meets international phytosanitary standards. The Seed Health Unit has attained ISO/IEC 17025 accreditation.

Useful information

Genetic Resources Program director: Kevin Pixley
Maize germplasm bank manager: Denise Costich
Wheat germplasm bank manager: Tom Payne
Seed health laboratory manager: Monica Mezzalama

Maize

Wheat

Website
Order accessions from CIMMYT
Search Genesys for accessions at CIMMYT

Key performance indicators of CGIAR genebanks, 2012-2017

HINT: Use the search key to filter the data. For descriptions of performance indicators, click here.
Indicator 2012 2013 2014 2015 2016 2017
1. Total number of accessions 169,796 175,526 177,831 181,151 183,083 182,922
2. Total number of accessions that are currently available 130,692 132,381 146,585 148,989 157,973 157,801
3. Number of seed accessions 169,796 175,526 177,831 181,151 183,083 182,809
4. Number of vegetatively-propagated accessions 0 0 0 0 0 0
5. Number of seed accessions held in long-term storage and safety duplicated at two levels 81,799 82,930 99,437 99,437 115,678 146,476
6. Number of vegetatively-propagated accessions in cryopreservation or safety duplicated as in vitro 0 0 0 0 0 0
PDCI score - - - 5.30 5.31 5.65

Genebank operations, 2012-2017

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Indicator 2012 2013 2014 2015 2016 2017
Number accessions received 2,142 6,238 2,059 3,090 1,909 3,317
Number accessions regenerated 7,043 5,206 11,157 5,545 5,296 1,554
Number accessions multiplied 9,591 8,476 3,681 1,767 3,069 7,634
Number accessions health tested 20,670 18,717 12,835 9,595 17,761 2,961
Number accessions cleaned 237 3,820 1,164 894 1,439 128
Number accessions viability tested 7,296 13,080 14,564 11,107 9,340 13,075

Number of samples distributed to users within and outside the CGIAR, 2012-2017

HINT: Use the search key to filter the data. For descriptions of performance indicators, click here.
Indicator 2012 2013 2014 2015 2016 2017
Number of samples distributed within the CGIAR 14,460 39,149 11,614 5,626 12,075 8,866
Number of samples distributed outside the CGIAR 10,422 14,696 7,538 7,370 9,496 9,705
Total number of samples distributed 24,882 53,845 19,152 12,996 21,571 18,571
Number of accessions distributed within the CGIAR 13,103 31,547 8,984 5,432 11,269 8,115
Number of accessions distributed outside the CGIAR 6,561 10,873 3,510 5,337 6,957 9,705
Total number of accessions distributed 19,664 42,420 12,494 10,769 18,226 17,820

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