Whether a particular combination is compatible can only be discovered by testing. Surprisingly, some pears ( Pyrus species) can be grafted onto quince ( Cydonia oblonga ), despite the generic difference. ![]() ![]() For example, within the genus Prunus, peach scions cannot be grafted onto plum root-stocks, but plums can be grafted onto peach. Sometimes the union can only be successful if one member is always the rootstock. However, not all members of the same genus are compatible. Hence, grafting is most likely to succeed with plants that are very closely related: either varieties of the same species or members ofthe same genus. This interaction at the cellular level requires that the scion not be rejected by the stock. From the cambium, new vascular (transport) tissues develop, permitting the transfer of water, nutrients, and hormones (growth regulators) to and from the scion. Healing involves the cooperative production of new cells, some of which form cambium. The process of wound healing is absolutely necessary for successful grafting. Budding is the term applied when a bud with supporting tissue is grafted into a slit or notch cut into the stem of the stock. Variations on this method involve complementary notches and the tongue being cut, according to how sturdy the scion is. Then the stems are joined, and the union is bandaged with waterproof tape (or tape plus wax) until the wound has healed. ![]() A simple method for stem grafting involves both stems being cut with a sharp blade at the same acute angle, to maximize the contact area of contact. The recipient plant is called the stock or rootstock, and the grafted part is referred to as the scion. History and important examples of graftingĪ graft is a horticultural term for a bud or shoot of one variety or species of plant that is positioned on the stem of another compatible plant to produce integrated growth.
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