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What is meant by grafting
This is the process of uniting two separate woody plant parts to rise new plants. The two plants are normally of the same species or closely related species.
The lower part ( the part of the root system) is called the Root stock. While the upper part that is grafted onto the root stock is called the Scion. The Scion must have one or more buds to give to a new plant.
If a bud is completely used, the method is called buddy or bud grafting
Note:
For successful grafting the cambium of the root stock must be in contact with the scion Cambium.
Only dicots are grafted because they undergo secondary thickening unlike monocots.