A SCION is a young shoot or twig of a plant, typically one cut for grafting or rooting. It is also used to refer to a descendant of a notable family, especially a son or daughter. In horticulture, a SCION is a shoot cut from one plant and grafted onto the rootstock of another. The SCION contains the desired genes to be duplicated in the new plant, which will combine the characteristics of both the rootstock and the SCION.