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Maize Doubled Haploid Production Services

CIMMYT provides a maize doubled haploid (DH) production service at cost to maize breeding programs in Africa and Latin America at its DH facilities in Kenya and Mexico.

This service reduces the time required to develop homozygous maize lines to just over one year, instead of three to seven years using more traditional inbreeding methods. This technology also results in better-quality maize lines: DH maize lines are 100% homozygous, whereas traditional inbreeding generates lines with only approximately 99.2% homozygosity. These advantages help breeders increase their rate of genetic gain: the rate at which the genetic potential of a crop increases in yield over time.

CIMMYT established centralized DH line production facilities for Africa at KALRO-Kiboko, Kenya. A similar facility is also in operation for Latin America at CIMMYT’s experimental station in Agua Fría, Mexico. Public and private sector organizations involved in maize breeding can access the DH production service by signing a DH service agreement.