Method for cuttage propagation of twigs of dalbergia humilis

Abstract

The invention relates to the technical field of plant cutting propagation, in particular to a method for cutting propagation of twigs of dalbergia humilis. The method comprises the following steps that 1, cutting environmental factors are set in a closed greenhouse, the light transmittance is 70%-75%, and spraying is conducted regularly so that the humidity can be kept at 85%-90%; 2, cutting slips are sheared, and cutting branches are selected as semi-lignified middle parts; 3, selecting a cutting medium, wherein the cutting medium is loess; and 4, hormone treatment: soaking the cutting slips in a 250 mg / L IBA solution for 30 minutes, then performing cuttage, and inserting half branches into the substrate. According to the technical scheme, by controlling the cutting time, the cutting environment, the cutting treatment, the cutting medium and other factors, the cutting rooting rate and the survival rate of the twigs of the dalbergia huang are remarkably increased, and the rooting rate is increased by 20%-50% or above.

Description

Technical Field

[0001] The invention relates to the technical field of plant cutting propagation, and in particular to a method for Dalbergia rosea softwood cutting propagation. Background Art

[0002] Dalbergia is a precious and high-quality timber species used in gardens. The wood of Dalbergia is light yellow or yellow-white, hard and dense, with pleasing texture, friction resistance and impact resistance, and can be used for vehicles, utensils, carvings, etc. In order to conserve the germplasm resources of excellent individual plants and propagate asexual cuttings, research institutions in various places have succeeded in the research of "Dalbergia cutting propagation technology", but the survival rate is low, so it has not yet been widely promoted.

[0003] Chinese invention patent CN 109937725 A discloses a method for propagating Dalbergia odorifera by softwood cuttings, comprising the following steps: Step 1: The enclosed greenhouse environment requires a light transmittance of 70%-75% and a humidity of 85%-90%; Step 2: Cut the cuttings to a length of 4-5 cm, retaining two compound leaf growth points; Step 3: Select a mixture of perlite and peat soil as the cutting medium; Step 4: Quickly dip the cuttings in 1‰ ABT1 solution for cuttings; Step 5: Transplant the rooted seedlings into a large container for cultivation. The advantage is that by controlling the cutting environment, cutting treatment, cutting medium and disinfection, the rooting rate and survival rate of Dalbergia odorifera softwood cuttings can be effectively improved, providing technical support for the conservation of excellent single-plant germplasm resources of Dalbergia odorifera and the expansion of asexual cuttings. However, studies have found that the cutting method is not effective in practical applications. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a method for propagating Dalbergia odorifera by softwood cuttings which is simple to operate, low in cost and has significant effects.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0006] A method for Dalbergia cocos softwood cutting propagation is provided, which comprises the following steps:

[0007] Step 1: Set the cutting environment factors in the closed greenhouse, with a light transmittance of 70%-75%, and spray regularly to maintain a humidity of 85%-90%;

[0008] Step 2: Cuttings are cut and the cuttings are selected to be in the semi-lignified middle part;

[0009] Step 3: Select the cutting medium, the cutting medium is loess;

[0010] Step 4: Hormone treatment, soak the cuttings in 250 mg / L IBA solution for 30 minutes and then insert half of the branches into the substrate.

[0011] Furthermore, in step 2, the length of the cutting branch is 15 cm.

[0012] Furthermore, in step 2, the cut cuttings retain 3-4 compound leaf growth points, the top compound leaf retains 2-3 leaflets, and the rest are cut off.

[0013] Furthermore, after the cuttings are completed, the greenhouse is fully enclosed to keep warm until the temperature rises to 40°C.

[0014] Furthermore, in step 4, the time for cutting is selected in spring, April or May.

[0015] Furthermore, after cutting, disinfection is carried out in combination with watering, and 600 times diluted 50% carbendazim wettable powder, 800 times diluted 50% thiophanate-methyl wettable powder, or 1000 times diluted 30% meconium-ethyl are applied alternately every 7-10 days.

[0016] The beneficial effects of the present invention are:

[0017] By applying the technical solution of the present invention, the rooting rate and survival rate of Dalbergia serrata softwood cuttings are significantly improved by controlling factors such as cutting time, cutting environment, cutting treatment, and cutting medium, and the rooting rate is increased by more than 20%-50%. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a photo of the growth morphology of the above-ground part of the Dalbergia changsha cuttings obtained after 10 days of cutting in the embodiment;

[0019] Figure 2 This is a photo of the growth morphology of the above-ground part of the Dalbergia changsha cuttings obtained after 20 days of cutting in the embodiment;

[0020] Figure 3 This is a photo of the growth morphology of the above-ground part of the Dalbergia changshaensis cuttings obtained after 30 days of cutting in the embodiment;

[0021] Figure 4 This is a photo of the growth morphology of the above-ground part of the Dalbergia odorifera cuttings obtained after 10 days of cutting in the embodiment;

[0022] Figure 5 This is a photo of the growth morphology of the above-ground part of the Dalbergia odorifera cuttings obtained after 20 days of cutting in the embodiment;

[0023] Figure 6 This is a photograph of the growth morphology of the aboveground part of the Dalbergia odoratum cuttings seedlings obtained 30 days after cutting in Example. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0025] Example 1

[0026] A method for Dalbergia cocos softwood cutting propagation comprises the following steps:

[0027] Step 1: Choose a closed greenhouse with a light transmittance of 70%-75%, and spray regularly to maintain a humidity of 85%-90%. The time for cuttings is chosen in spring from April to May.

[0028] Step 2: Choose the semi-lignified upper part of the cuttings, cut the cuttings to a length of 15 cm, retain 3-4 compound leaf growth points, retain 2-3 leaflets on the top compound leaf, and cut off the rest.

[0029] Step three: Selection of cutting medium: loess is the cutting medium.

[0030] Step 4: Cuttings: Soak the cuttings in 250 mg / L IAA solution for 30 minutes and then insert half of the branches into the substrate.

[0031] After the cuttings are completed, the greenhouse is fully enclosed and kept warm until the temperature rises to 40°C. After the cuttings are completed, disinfection is carried out in combination with watering, and 50% carbendazim wettable powder 600 times liquid or 50% thiophanate-methyl wettable powder 800 times liquid or 30% oxadiazine 1000 times liquid is applied alternately every 7-10 days.

[0032] Example 2

[0033] In the method steps of Example 2, the same points as those of Example 1 are not described here, and only the differences from Example 1 are described. The difference between Example 2 and Example 1 is that the cuttings are soaked in 500 mg / L NAA solution for 30 minutes before cutting, and the rest is the same as described in Example 1.

[0034] Example 3

[0035] In the method steps of Example 3, the same points as those of Example 1 are not described here, and only the differences from Example 1 are described. The difference between Example 3 and Example 1 is that the cuttings are soaked in 750 mg / L IBA solution for 30 minutes before cutting, and the rest is the same as described in Example 1.

[0036] Example 4

[0037] In the method steps of Example 4, the same points as those of Example 1 are not described here, and only the differences from Example 1 are described. The difference between Example 4 and Example 1 is that the cutting branches are selected to be the semi-lignified middle part, and the cuttings are soaked in 500 mg / L IAA solution for 30 minutes before cutting, and the rest is the same as described in Example 1.

[0038] Example 5

[0039] In the method steps of Example 5, the same points as those of Example 1 are not described here, and only the differences from Example 1 are described. The difference between Example 5 and Example 1 is that the cutting branches are selected to be the semi-lignified middle part, and the cuttings are soaked in 750 mg / L NAA solution for 30 minutes before cutting, and the rest is the same as described in Example 1.

[0040] Example 6

[0041] In the method steps of Example 6, the same points as those of Example 1 are not described here, and only the differences from Example 1 are described. The difference between Example 6 and Example 1 is that the cutting branches are selected to be the semi-lignified middle part, and the cuttings are soaked in a 250 mg / L IBA solution for 30 minutes before cutting, and the rest is the same as described in Example 1.

[0042] Example 7

[0043] In the method steps of Example 7, the same points as those of Example 1 are not described here, and only the differences from Example 1 are described. The difference between Example 7 and Example 1 is that the cutting branches are selected to be the semi-lignified lower part, and the cuttings are soaked in 750 mg / L IAA solution for 30 minutes before cutting, and the rest is the same as described in Example 1.

[0044] Example 8

[0045] In the method steps of Example 8, the same points as those of Example 1 are not described here, and only the differences from Example 1 are described. The difference between Example 8 and Example 1 is that the cutting branches are selected to be semi-lignified lower parts, and the cuttings are soaked in 250 mg / L NAA solution for 30 minutes before cutting, and the rest is the same as described in Example 1.

[0046] Example 9

[0047] In the method steps of Example 9, the same points as those of Example 1 are not described here, and only the differences from Example 1 are described. The difference between Example 9 and Example 1 is that the cutting branches are selected to be semi-lignified lower parts, and the cuttings are soaked in 500 mg / L IBA solution for 30 minutes before cutting, and the rest is the same as described in Example 1.

[0048] Comparative Example

[0049] In the method steps of the comparative example, the same points as those in Example 1 are not described here, and only the differences from Example 1 are described. The difference between the comparative example and Example 1 is that the cutting medium is perlite and peat soil, and the volume ratio of the mixture is 1:1; the cuttings are soaked in 1g / Kg ABTI solution for 5-10 seconds before cutting, and the rest is the same as described in Example 1.

[0050] After the cuttings took root, the rooting ratios of the cuttings of Examples 1-9 and the comparative example were counted, and the results are shown in the following table:

[0051]

[0052]

[0053] In summary, by applying the technical solution of the present invention, the rooting rate and survival rate of Dalbergia serrata softwood cuttings are significantly improved by controlling factors such as cutting time, cutting environment, cutting treatment, and cutting medium, and the rooting rate is increased by 20%-50%.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for Dalbergia rosea softwood cutting propagation, characterized in that: The following steps are involved: Step 1: Set the cutting environment factors in the closed greenhouse, with a light transmittance of 70%-75%, and spray regularly to maintain a humidity of 85%-90%; Step 2: Cuttings are cut and the cuttings are selected to be in the semi-lignified middle part; Step 3: Select the cutting medium, the cutting medium is loess; Step 4: Hormone treatment, soak the cuttings in 250 mg / L IBA solution for 30 minutes and then insert half of the branches into the substrate.

2. The method for softwood cutting propagation of Dalbergia cocos according to claim 1, characterized in that: In step 2, the length of the cuttings is 15 cm.

3. The method for softwood cutting propagation of Dalbergia cocos according to claim 2, characterized in that: In step 2, retain 3-4 compound leaf growth points on the cut cuttings, retain 2-3 leaflets on the top compound leaf, and cut off the rest.

4. The method for softwood cutting propagation of Dalbergia cocos according to claim 1, characterized in that: After the cuttings are completed, the greenhouse is fully enclosed to keep warm until the temperature rises to 40℃.

5. The method for softwood cutting propagation of Dalbergia cocos according to claim 1, characterized in that: In step 4, the time for cutting is chosen in spring, April or May.

6. The method for softwood cutting propagation of Dalbergia odorifera according to claim 1, characterized in that: After cutting, disinfection is carried out in combination with watering. Apply 600 times diluted 50% carbendazim wettable powder, 800 times diluted 50% thiophanate-methyl wettable powder, or 1000 times diluted 30% meconium-ethyl alternately every 7-10 days.

Images