After visiting the chrysanthemum exhibition, Hao Si marveled at a pot of colorful chrysanthemums. Do you know how a gardener makes chrysanthemums with many colors?

Grafting is one of the artificial propagation methods of plants, that is, grafting branches or buds of one plant to stems or roots of another plant, so that the two connected parts grow into a complete plant.

When grafting, the scion should be closely combined with the cambium of rootstock to ensure the survival of the scion. Grafted branches or buds are called scions; Grafted plants are called roots or edible wood. Generally, seedlings with 2 ~ 4 buds are selected as scions, which become the upper part or top of the plant after grafting, and rootstocks become the roots of the plant after grafting.

When grafting, the cambium of the two injured surfaces are close together and tied together. As a result, due to cell proliferation, they heal each other and become a whole connected with vascular tissue. This is the principle of grafting.

function

Grafting can not only keep the excellent characteristics of scion varieties, but also make use of the favorable characteristics of rootstock. Reasonable grafting combination can play a guiding role in asexual hybrid breeding, strengthen the characteristics of parents, and achieve the goals of early fruiting, early high yield, enhanced resistance, saving propagation materials and increasing the number of seedlings.

Grafting methods are divided into branch grafting and bud grafting. Grafting can be carried out in both spring and autumn, and the survival rate of grafting in spring is higher. Bud grafting is mostly carried out in late summer and early autumn. In modern horticultural techniques and methods, grafting is not only a propagation method, but also an important means to affect crop characters and achieve high yield and high quality, so it has been widely used.

Refer to the above contents: Baidu Encyclopedia-grafting, Baidu Encyclopedia-grafting method.