Lantern tree grafting method

Abstract

The invention discloses a grafting method of a lantern tree, and relates to the technical field of plant grafting, and the main points of the technical scheme are that the grafting method comprises the following steps: S1, rootstock selection and treatment: selecting a pendant flower as a rootstock, cutting off the upper part of the rootstock, vertically and downwards cutting a notch on one side of the cross section of the rootstock, and forming a cut-grafting interface with the depth just reaching the xylem; s2, scion selection and treatment: selecting a lantern tree qualitative branch as a scion, cutting the scion into branch sections, cutting a long cut surface at the lower end of the scion by using a knife to expose a cambium, and cutting a short cut surface on the opposite side of the long cut surface to enable the lower end of the scion to be wedge-shaped; s3, grafting operation: inserting the pretreated long cut surface of the scion into a pre-cut vertical cut of the stock, so that the long cut surface of the scion is attached to a cambium on at least one side of the stock; a plastic film is wound upwards from the lower portion of the connector, and the combination portion of the stock and the scion is tightly bound and fixed and bagged. The invention fills up the blank of research in the field and is expected to cultivate a more heat-resistant lantern tree variety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plant grafting, and more particularly to a grafting method of Enkianthus quinqueflorus. BACKGROUND

[0002] Enkianthus quinqueflorus, also known as Enkianthus chinensis, is a deciduous shrub or small tree of the Ericaceae family, with an alternative name of Enkianthus chinensis. The height of the plant is 2-6m, the tender branches are gray-green and hairless, and often have purple-red color. The leaf blades are long oval to long oval elliptical, 2.5-6cm long and 1-3cm wide. The corymiform raceme has multiple flowers, the pedicel is slender and pendant, the corolla is wide bell-shaped, about 1cm long, and has red stripes. The capsule is round or oval. The flowering period is May, and the fruiting period is June-October. It is distributed in Zhejiang, Anhui, Jiangxi, Fujian, Hubei, Hunan, Guangdong and Guangxi, and is a kind of beautiful ornamental tree. In the blooming season, the tree is full of red light. The flower shape is unique, and the leaf color is pure and chaste, which is a family garden plant and landscape tree with great development prospects. At present, Enkianthus quinqueflorus has been mass propagated by seed and cutting, but it is not resistant to high temperature, which limits its growth and cannot meet the current market requirements.

[0003] Enkianthus chinensis, also known as Enkianthus chinensis, is a shrub or small tree of the Ericaceae family, with an alternative name of Enkianthus chinensis. The flowering period is February-March, and it is distributed in Jiangxi, Fujian, Hubei, Hunan, Guangdong, Guangxi, Sichuan, Guizhou and Yunnan at an altitude of 100-2400m. It is the lowest altitude and the earliest flowering species in the Enkianthus genus, and has important value in breeding. Using Enkianthus chinensis as a rootstock is of great significance to improve the heat resistance and early flowering of Enkianthus quinqueflorus. In view of this, the present application provides a grafting method of Enkianthus quinqueflorus using Enkianthus chinensis as a rootstock, which fills the research gap in this field and aims to cultivate more heat-resistant Enkianthus quinqueflorus varieties.

[0004] Note: According to the record in the Chinese Plant Flora, the altitude of Enkianthus chinensis is 600-2400m, but the author and many scholars have found through field investigation that Enkianthus chinensis is distributed at an altitude of 100m in Zhaoqing, Shenzhen Wutong Mountain and surrounding islands in Guangdong. SUMMARY

[0005] The present application aims to provide a grafting method of Enkianthus quinqueflorus, which solves the above problems.

[0006] The above technical purpose of the present application is achieved by the following technical scheme: a grafting method of Enkianthus quinqueflorus, comprising the following steps:

[0007] S1. Rootstock selection and treatment: Select Campanula serrata as the rootstock, cut off the upper part of the rootstock, and make a vertical incision on one side of the cross section of the rootstock, just deep enough to reach the xylem to form the incision interface;

[0008] S2. Scion selection and processing: Select woody branches of Chinese lantern trees as scions. Cut the scions into segments. Use a knife to cut a long cut surface at the bottom of the scion to expose the cambium. On the opposite side of the long cut surface, cut a short cut surface to make the bottom of the scion wedge-shaped.

[0009] S3, grafting operation: the pre-treated scion with the long cut surface facing the center of the xylem of the stock is inserted into the pre-cut vertical incision of the stock, so that the long cut surface of the scion is in contact with the cambium of at least one side of the stock;

[0010] Use plastic film to wrap upward from the bottom of the interface to tightly bind the joint of the rootstock and scion. After the binding is completed, use a transparent ziplock bag to seal the entire grafting interface and the upper incision of the scion.

[0011] The present invention is further configured as follows: in step S1, the Campanula is a 2-3 year old seedling or cutting seedling.

[0012] The present invention is further configured as follows: in step S1, the length of the vertically downward incision is 1.5-2.5 cm.

[0013] The present invention is further configured as follows: in step S1, the cross section of the rootstock is 10-15 cm away from the ground.

[0014] The present invention is further configured as follows: in step S2, the branch segment is 5-10 cm long and contains 2-3 hidden buds.

[0015] The present invention is further configured as follows: in step S2, the length of the long chamfer is 1.5-2.5 cm, the length of the short chamfer is 0.5-1 cm, and the angle is about 45°-60°.

[0016] The present invention is further configured as follows: in step S3, the scion is inserted to a depth of 1-2 mm so that the upper end of the short chamfered surface of the scion is slightly exposed.

[0017] The present invention is further configured as follows: in step S3, the plastic film is a grafting film.

[0018] The present invention is further configured to include: S4, post-grafting management: placing the grafted plants in a cool, ventilated, and moderately humid environment for maintenance, avoiding direct sunlight and rain, checking the healing of the interface in a timely manner, and promptly erasing the tiller buds sprouting on the rootstock. After the scion buds germinate and the new shoots grow to 15-20 cm, gradually remove the bindings and switch to normal maintenance.

[0019] In summary, the present invention has the following beneficial effects:

[0020] 1. By comparing the grafting survival rates of Campanula serrata and Campanula serrata as rootstocks, a rootstock more suitable for grafting Lantern Tree was selected, with a grafting survival rate of 50%, filling the gap in this research field.

[0021] 2. Using campanula as rootstock is of great significance for improving the heat resistance of lantern trees and early flowering. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the rootstock embodiment of the present invention. Figure 1 ;

[0023] Figure 2 It is the rootstock embodiment of the present invention. Figure 2 ;

[0024] Figure 3 It is the scion grafting embodiment of the present invention. Figure 1 ;

[0025] Figure 4 It is the scion grafting embodiment of the present invention. Figure 2 ;

[0026] Figure 5 This is the splicing operation in the embodiment of the present invention. Figure 1 ;

[0027] Figure 6 This is the splicing operation in the embodiment of the present invention. Figure 2 ;

[0028] Figure 7 It is the grafting binding and survival method in the embodiment of the present invention. Figure 1 ;

[0029] Figure 8 It is the grafting binding and survival method in the embodiment of the present invention. Figure 2 ;

[0030] Figure 9 It is the grafting binding and survival method in the embodiment of the present invention. Figure 3 ;

[0031] Figure 10 It is the grafting binding and survival method in the embodiment of the present invention. Figure 4 . DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1:

[0034] 1. Rootstock Selection and Preparation: Choose a healthy, pest-free, 2-3 year-old seedling or cutting of Campanula camara as the rootstock. Use a sharp grafting knife to horizontally cut the upper portion of the rootstock, 10-15 cm above the ground, at a smooth, flat area. Make a vertical incision about 1.5-2.5 cm long on one side of the cross-section (approximately 1 / 4 to 1 / 3 of the diameter), slightly down to the xylem, to form the grafting interface.

[0035] 2. Scion Selection and Processing: Select healthy, well-developed, pest-free, one-year-old lignified branches of the Chinese lantern tree as scions. Cut the scions into segments approximately 5-10 cm in length (including 2-3 hidden buds). Use a sharp grafting knife to cut a long bevel at the lower end of the scion, approximately 1.5-2.5 cm in length (matching the length of the rootstock cut). The bevel should be flat, smooth, and cut in one go, exposing the cambium. On the opposite side of the long bevel, cut a short bevel, approximately 0.5-1 cm in length, at an angle of approximately 45°-60°, to give the lower end of the scion a wedge shape.

[0036] 3. Grafting (Cut-Grafting): With the long cut surface facing inward (toward the center of the stock's xylem), carefully insert the prepared scion into the pre-cut vertical incision in the stock. Ensure that the long cut surface of the scion is aligned closely with the cambium on both sides, or at least one side, of the incision. The scion should be inserted so that the upper end of the short cut surface of the scion is slightly exposed (approximately 1-2 mm). Binding and Sealing: Use a grafting film with a certain degree of elasticity to wrap upwards from the lower interface, tightly binding the joint between the stock and scion to ensure a tight bond and prevent displacement. After binding, seal the entire grafting joint and the upper cut of the scion with a transparent ziplock bag to minimize moisture evaporation and prevent pathogens from entering. Open the bagging bag as appropriate after the scion sprouts to ventilate and gradually remove it. Post-Grafting Care: Keep the grafted plant in a cool, well-ventilated environment with moderate humidity, avoiding direct sunlight and rain. Check the healing of the joint regularly and remove any sprouts that appear on the stock. After the scion buds germinate and grow stably (usually the new shoots grow to more than 15-20 cm), gradually remove the binding materials (to avoid the formation of constriction marks) and switch to normal maintenance.

[0037] 4. Grafting Time: The grafting method of the present invention is carried out in early spring, specifically on February 28, 2025 (preferably around the beginning of spring in the lunar calendar, when the rootstock sap begins to flow and the scion has not yet sprouted). During this period, the temperature rises but is still not high, which is conducive to the healing of the joint and avoids the direct impact of high temperatures in summer on the healing process.

[0038] Comparative Example 1:

[0039] The difference from Example 1 is that the rootstock is Campanula serrata.

[0040] The survival rate statistics of the above experiment are shown in the following table:

[0041]

[0042] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for grafting a lantern tree, characterized by: The steps include: S1. Rootstock selection and treatment: Select Campanula serrata as the rootstock, cut off the upper part of the rootstock, and make a vertical incision on one side of the cross section of the rootstock, just deep enough to reach the xylem to form the incision interface; S2. Scion selection and processing: Select woody branches of Chinese lantern trees as scions. Cut the scions into segments. Use a knife to cut a long cut surface at the bottom of the scion to expose the cambium. On the opposite side of the long cut surface, cut a short cut surface to make the bottom of the scion wedge-shaped. S3, grafting operation: the pre-treated scion with the long cut surface facing the center of the xylem of the stock is inserted into the pre-cut vertical incision of the stock, so that the long cut surface of the scion is in contact with the cambium of at least one side of the stock; Use plastic film to wrap upward from the bottom of the interface to tightly bind the joint of the rootstock and scion. After the binding is completed, use a ziplock bag to seal the entire grafting interface and the upper incision of the scion.

2. The grafting method of lantern tree according to claim 1, wherein: In step S1, the Campanula is a 2-3 year old seedling or cutting seedling.

3. The grafting method of lantern tree according to claim 1, wherein: In step S1, the length of the vertically downward incision is 1.5-2.5 cm.

4. The grafting method of lantern tree according to claim 1, wherein: In step S1, the cross section of the rootstock is 10-15 cm from the ground.

5. The grafting method of lantern tree according to claim 1, characterized in that: In step S2, the branch segment is 5-10 cm long and contains 2-3 hidden buds.

6. The grafting method of lantern tree according to claim 1, wherein In step S2, the length of the long chamfer is 1.5-2.5 cm, the length of the short chamfer is 0.5-1 cm, and the angle is about 45°-60°.

7. The grafting method of lantern tree according to claim 1, characterized in that: In step S3, the scion is inserted to a depth of 1-2 mm so that the upper end of the short chamfered surface of the scion is slightly exposed.

8. The grafting method of lantern tree according to claim 1, characterized in that: In step S3, the plastic film is a grafting film.

9. The grafting method of lantern tree according to claim 1, characterized in that: It also includes S4, post-grafting management: Place the grafted plants in a cool, ventilated, and moderately humid environment for maintenance, avoid direct sunlight and rain, check the healing of the interface in a timely manner, and promptly remove the tiller buds that germinate on the rootstock. After the scion buds germinate and the new shoots grow to 15-20 cm, gradually remove the bindings and switch to normal maintenance.

Images