CIMMYT hosts the largest collection of maize and wheat in the world: 28,000 unique kinds of maize and 140,000 of wheat. Materials are made available under the terms and conditions of the multilateral system of access and benefit sharing, using the Standard Material Transfer Agreement (SMTA). A duplicate of these wheat varieties is stored at the Svalbard Global Seed Vault in Svalbard, Norway. Through CIMMYT’s global breeding system and partner network, this genetic diversity is used to develop maize and wheat varieties that have higher yields, and can survive climate stress and diseases.