In grafting, the rooted plant is called stock. The stem cutting from the donor plant is called
Grafting is a process in which a stem is cut and tied over the stem of another plant having roots to combine the characteristics of both plants into one.
The stem cutting from the donor plant is called the scion.
If a bud is used as the scion then it is known as a bud graft.
The stock(or rootstock) can be described as a stem with a well developed root system to which the scion may be attached during grafting.
Callus refers to the undifferentiated mass of cells that results from culturing of plant tissues or cells during micropropagation.