What is the history and origin of sweet potato?

Sweet potato source: Sweet potato is produced in Peru, Ecuador and Mexico in South America.

History: 1492, Columbus, a famous Spanish navigator, got the approval of the Queen, started his first ocean exploration in his life and discovered the American continent. In Central and South America, Columbus saw the local crop-sweet potato, and thought it was delicious. When he returned to China, he took it back to Spain as a gift for Queen Isabella. In this way, sweet potato went out of his hometown and gradually came to strange countries such as Europe and Asia with human beings.

The characteristics of sweet potato:

The underground part of sweet potato is a round, oval or spindle-shaped root, and the shape, skin color and flesh color of the root vary with varieties or soils. Sweet potato is full of treasures, but the seedlings can be fed to animals, and the leaves and stems are also good dishes. It is best to grind the stems and make them into vermicelli.

Sweet potatoes like temperature and are afraid of cold. Low temperature is harmful to sweet potato growth. When the temperature drops to 15℃, the growth will stop. When the temperature is lower than 9℃, potato chips will gradually suffer from cold damage and rot. In the range of 18~32℃, the higher the temperature, the faster the growth rate of sweet potato, and more than 35℃ is not good for growth.