Introduction (Latin: introductio - to introduce), plant introduction - moving (attracting) different types and varieties of plants from their natural range to areas where they have not been encountered before. The concept of "introduction" has been used since the second half of the 19th century. The theory of plant introduction was founded by the Swiss botanist Augustin Pyramus de Candolle in 1855. Nikolay Vavilov developed the scientific basis of introduction in 1920 based on the theory of centers of origin of cultivated plants. Most of the cultivated plants grown on almost all continents are "transplanted" plants that have spread from different geographical areas. In the 16th and 17th centuries, corn, potatoes, sunflowers, tomatoes, tobacco, and others spread from America to Europe, and from the 17th century, plums, apples, pears, chestnuts, and others brought from Europe were grown in North America, and in Australia, corn, pumpkins, olives, grapes, and citrus fruits were grown. appeared.
  They independently analyze the topic together with their group, ask the teacher about misunderstandings, and 20 minutes before the end of the lesson, the groups answer questions with each other and are evaluated.