scion
A "scion" is a young shoot or twig of a plant, especially one that is used for grafting onto another plant. This technique allows for the combination of desirable traits from two different plants, such as disease resistance or improved fruit quality. The scion is typically taken from a healthy, mature plant and is attached to the rootstock of another plant to promote growth.
In a broader context, the term "scion" can also refer to a descendant or heir, particularly in a wealthy or influential family. For example, a scion of a famous family may inherit not only wealth but also a legacy of social status and responsibility.