The various types of vegetative propagation are

• Cutting
• Layering
• Grafting
• Parthenogenesis
• Micro-propagation in vitro

Grafting

• It is a method in which two parts of different plants are joined together in such a way that they unite and grow as one plant.
• The portion of the plant that is grafted onto another plant is known as the scion, and the plant on which grafting is performed is known as the stock.
  
• The stock and the scion are tied in such a way that the cambium of the scion and the stock come in contact with each other.
  
• The stock is so chosen that it possesses qualities like disease resistance, high water absorbing capacity, deep penetrating roots for a firm hold, etc. The scion is so chosen that it possesses qualities like high yield of pulp or seeds (as desired) from a single fruit, etc.
  
• For example citrus-root stock is used for a variety of grafts like sweet orange, lime, grape, etc.