The most important potato cultivar is the tetraploid variety. The tetraploid cultivar potato spread around the world, initially from Colombia in South America in 1570 when the short-day type was introduced to Spain in Europe, where it was artificially selected to become the long-day type.
The potato was brought to Europe from South America by a Spanish colonizer in the mid-sixteenth century. At that time people always appreciated the beauty of its flowers and used it as a decoration.
In 1586 the English defeated the Spanish in the Caribbean and gathered seeds of tobacco and other plants from South America and brought the potato to England, where the climate was suitable for potatoes, which were more productive and easier to manage than other grains.
Later, a French agronomist, Anne Obamanchy, found that potatoes were not only edible, but could also be used to make bread. Since then, French farmers have been growing potatoes on a large scale.
By 1650 potatoes had become a major food crop in Ireland and began to spread across Europe.
In the 17th century, the potato has become an important food crop in Europe and has spread to China, because the potato is very suitable for the original grain yield is very low, can only grow oat (naked oat) in the alpine region to grow, and soon popularized in Inner Mongolia, Hebei, Shanxi, northern Shaanxi, potatoes and corn, sweet potatoes, and other high-yield crops from the Americas have become the main food of the poor class, and played an important role in maintaining the rapid increase in China's population. The rapid increase in population played an important role.
Brought back to the United States by Irish immigrants in 1719, it began to be cultivated in the United States.
In the early nineteenth century, when Peter the Great of Russia traveled through Europe, he bought a sack of potatoes for a large sum of money and planted them in the palace garden, which gradually developed into private cultivation.