Vegetable was very dull, typically comprising mainly some staple product made from rice, rye, barley, wheat, millet or maize. The addition of vegetable matter provided some variety to the diet. The staple diet of the Aztecs in Central America was maize and they cultivated tomatoes, avocados, beans, peppers, pumpkins, squashes, peanuts, and amaranth seeds to supplement their tortillas and porridge. In Peru, the Incas subsisted on maize in the lowlands and potatoes at higher altitudes. They also used seeds from quinoa, supplementing their diet with peppers, tomatoes, and avocados. In Ancient China, rice was the staple crop in the south and
World Vegetable Center at the World Vegetable Center. Indigenous vegetables are domesticated or semi-wild vegetable crops that are grown in particular regions as an integral part of a local food system. Many of them are underutilized crops, particularly in regions where they are not native. A collection of vegetable germplasm is kept at the World Vegetable Center, which is considered to have the "largest and most diverse collection...in the world.". The collection itself contains more than 60,000 accessions of 442 different species collected from 156 countries. AVGRIS, the AVRDC Vegetable Genetic Resources Information System, provides access to all the Center's data associated with