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CIMMYT (International Maize and Wheat Improvement Center)
CIMMYT (Centro Internacional de Mejoramiento de Maíz y Trigo; El Batán, Texcoco, Estado de México; CGIAR consortium member; ~$200M annual budget funded by World Bank, Gates Foundation, and 60+ governments) is the world's largest public corn germplasm bank and the primary open-source counterweight to private seed IP concentration. CIMMYT's Maize Germplasm Bank holds over 28,000 maize accessions — including wild Zea mays relatives (teosinte) and traditional landraces from Mexico, Central America, and the Andes that contain genetic diversity not present in commercial hybrid germplasm. CIMMYT developed DTMA (Drought Tolerant Maize for Africa) varieties distributed free to smallholder farmers in sub-Saharan Africa. CIMMYT licenses germplasm to both public and private breeders under ITPGRFA (International Treaty on Plant Genetic Resources for Food and Agriculture) standard material transfer agreements — obligating downstream seed companies to share benefits. Nobel Peace Prize winner Norman Borlaug founded CIMMYT's wheat program (1966) as an extension of the Green Revolution. CIMMYT's corn germplasm bank is the genetic insurance policy against crop failure if any single commercial inbred line becomes dominant and is then destroyed by pathogen or climate stress.
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Chokepoint2023
CIMMYT's El Batán germplasm bank holds the world's largest collection of wild maize relatives (teosinte — Zea mays ssp. mexicana, parviglumis, and others) that contain stress tolerance traits absent from all commercial inbred lines. Climate change projections show that Corn Belt growing conditions by 2050 will exceed the temperature and drought tolerance of current commercial hybrid germplasm during critical reproductive periods. Commercial breeders will need to introgress traits from CIMMYT teosinte accessions — alleles for extreme heat tolerance, waterlogging tolerance, and drought recovery — to maintain corn yield under 2050 climate conditions. Without CIMMYT's wild relative collection, there is no known source of these traits. CIMMYT's germplasm bank is therefore the upstream insurance policy for the entire commercial hybrid corn industry's long-term viability — a public good owned by no company but maintained on $200M/year of donor funding from governments and philanthropies. If CIMMYT's funding were eliminated or its El Batán campus disrupted, the global corn seed industry would lose irreplaceable genetic diversity that private companies have not replicated and cannot independently maintain.
CIMMYT ↗