Factors affecting the survival rate of fruit tree grafting

Grafting technology is widely used in fruit tree production, it can improve varieties and cultivate excellent fruit trees, which is of great significance to improve economic value. However, what we are most concerned about is the survival rate after grafting, so what are the reasons for the survival rate of grafting? Let's take a look.

1. Affinity

When a fruit tree is grafted, there must be an excellent affinity between the scion and the rootstock, and at this time, the basic conditions for the survival of the grafting, no matter what fruit tree, which grafting method is used, no matter what the environmental conditions, the scion and rootstock must have a certain affinity in order to survive. Generally, the same variety will be selected when grafting, which is the easiest to survive, followed by the fruit trees of the same family, while the fruit trees of different families and genera are more difficult to survive after grafting.

2. Vigor of scion and rootstock

In order to make the grafting successful, it is necessary to store sufficient nutrients and strong vitality of scions and rootstocks. If the vitality of scions and rootstocks is low, the stored nutrients are relatively low, so it is very difficult for grafting to survive. Therefore, when grafting, it is generally necessary to choose the rootstock to grow strong, the stem diameter is more than 0.8 cm, and there are no diseases and insect pests; and the scion should also choose the excellent mother plant which is mature, robust and free of diseases and insect pests in order to ensure the survival rate.

3. Grafting time

The commonly used grafting methods are bud grafting, skin grafting, abdominal grafting, cutting and so on. Different grafting methods operate differently, so the grafting time is also different, and should be carried out according to the change of weather. If you choose an unsuitable grafting method at the wrong time, it may lead to grafting failure. Generally, it is necessary to choose warm, windless or sunny days for grafting, but rainy days or strong windy days are not suitable for grafting. In winter and spring, warm sunny days should be selected for grafting to avoid low temperature and windy days. In summer and autumn, if you want to grafting in the early morning or evening, you should avoid the period of bright noon light exposure.

4. Whether the cambium is aligned.

During grafting, the cambium of the rootstock and the scion will be aligned together, so that the grafting can be successful, while in the cambium, the layer of tissue between the branch and xylem has a very strong meristematic ability, and the cambium will constantly divide the cells, causing them to heal together and form new plants. If the cambium of the two are not pasted together, it will lead to the failure of grafting, so what is important when grafting.

The above is the introduction of the factors affecting the survival rate of fruit tree grafting. I hope it can help you. If you want to know more about it, please follow us.