CN108901445B

CN108901445B - Application of hydrogen peroxide in regulating and controlling growth and development of side branches of cut peony flowers

Info

Publication number: CN108901445B
Application number: CN201810947100.3A
Authority: CN
Inventors: 赵大球; 陶俊; 刘慧娜
Original assignee: Yangzhou University
Current assignee: Yangzhou University
Priority date: 2018-08-20
Filing date: 2018-08-20
Publication date: 2020-07-31
Anticipated expiration: 2038-08-20
Also published as: CN108901445A

Abstract

The invention discloses application of hydrogen peroxide in regulating and controlling the growth and development of cut flower lateral branches of Chinese herbaceous peony, namely spraying a hydrogen peroxide solution on the branches and leaves of Chinese herbaceous peony in the growth process from the leaf-expanding period to the full-bloom period of Chinese herbaceous peony. Compared with the prior art, the method has the following advantages: (1) the method is simple and convenient to operate, safe, pollution-free, capable of greatly saving labor cost and capable of being applied to large-scale production of the peony cut flowers; (2) the method has obvious effect, can effectively regulate and control the growth and development of the side branches of the peony cut flower, reduces the number of the side branches to be more than 70 percent, can also increase the thickness of a main stem to be more than 10 percent, improves the mechanical strength of a flower stem to be more than 12 percent, and obviously improves the quality of the peony cut flower.

Description

Application of hydrogen peroxide in regulating and controlling growth and development of side branches of cut peony flowers

Technical Field

The invention relates to application of hydrogen peroxide in regulating and controlling growth and development of side branches of cut flowers of Chinese herbaceous peony, belonging to the technical field of cultivation of Chinese herbaceous peony.

Background

Paeonia lactiflora Pall is a traditional famous flower originally produced in China, is a high-grade cut flower widely favored in the international market at present, and is widely used in festive occasions such as wedding and celebration. Desirable cut peony flowers are not only excellent in flower type, flower color, flower fragrance, flower stem, vase expression, etc., but also have the characteristics of having few or no side branches as in plants such as chrysanthemum, rose, etc. The traditional Chinese peony variety is mainly used for courtyard cultivation and pot culture, and the attention is not focused on the side branches during variety breeding, but more on the aspects of flower type, flower color, flower fragrance, flower stem and the like. This also makes Chinese some peony varieties with good color, smell and appearance need to remove side branches when they are changed into cut flowers. Unlike other plants, the peony lateral branches do not affect the overall crown width and shape of the plants, but the growth and development of the lateral branches not only consumes the nutrition of the plants, but also affects the growth of terminal buds, thereby reducing the commercial quality of the peony cut flowers. At present, the production mainly adopts a manual removal method aiming at the problem of the multi-lateral branches of the Chinese herbaceous peony. For example: it has been found in the graduation paper "influence of debarked buds and calcium spraying on the quality of cut peony flowers" (2012, Beijing: China forestry science research institute) that the quality of cut peony flowers can be effectively improved by artificially removing the lateral branches when the main buds are 2 cm. Although the manual removing method can thoroughly remove the lateral branches on the main stems of the Chinese herbaceous peony and further effectively improve the quality of the Chinese herbaceous peony cut flower, the conventional manual removing method has high labor cost and time and labor consumption in operation, and is difficult to adapt to the development requirements of modern agriculture. In addition, the invention patent of a method for inhibiting development of lateral branches of Chinese herbaceous peony (application number: 201510523390.5) discloses that spraying of a paclobutrazol solution on branches and leaves of Chinese herbaceous peony achieves the effect of inhibiting the development of lateral branches. Although the method can inhibit the development of the lateral branches of the Chinese herbaceous peony, the application of paclobutrazol is easy to pollute soil and can remain in plants for a long time, and the reason is that the paclobutrazol is rarely applied in modern agriculture. Therefore, the invention is of great importance in the method for regulating and controlling the growth and development of the lateral branches, which is simple, safe and pollution-free and can be used on the peony cut flowers.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the technical problems, the invention provides the application of hydrogen peroxide in regulating and controlling the growth and development of the side branches of the peony cut-flower, the method is simple, convenient, safe and pollution-free, and can be applied in large-scale production of the peony cut-flower in fields.

The technical scheme is as follows: in order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:

application of hydrogen peroxide in regulating and controlling growth and development of side branches of cut peony flowers.

The specific application method is as follows:

spraying hydrogen peroxide solution on the branches and leaves of the Chinese herbaceous peony during the growth process from the leaf-expanding period to the full-bloom period of the Chinese herbaceous peony.

The concentration of the hydrogen peroxide solution is 10-100 mmol-L^-1。

The spraying frequency is once per week, and the spraying frequency is 4-6 times.

Each spraying is carried out in the evening of sunny weather.

The front and back sides of the plant leaf must be sprayed evenly until the solution flows down the leaf tip.

The technical effects are as follows: compared with the prior art, the method has the following advantages:

(1) the method is simple and convenient to operate, safe, pollution-free, capable of greatly saving labor cost and capable of being applied to large-scale production of the peony cut flowers;

(2) the method has obvious effect, can effectively regulate and control the growth and development of the side branches of the peony cut flower, reduces the number of the side branches to be more than 70 percent, can also increase the thickness of a main stem to be more than 10 percent, improves the mechanical strength of a flower stem to be more than 12 percent, and obviously improves the quality of the peony cut flower.

Drawings

FIG. 1 is H₂O₂The growth state of cut flower lateral branches of the processed peony at the full-bloom stage is shown as the control on the left side and H on the right side₂O₂And (4) treating, wherein white arrows indicate side branches of the cut peony flowers.

FIG. 2 is H₂O₂And processing the morphological index of the cut side branch of the peony in the full-bloom stage. Different letters represent very significant differences (P)<0.01)。

FIG. 3 is H₂O₂Treating the morphological index of the cut main stem of the peony in the full-bloom stage. Different letters represent very significant differences (P)<0.01)。

Detailed Description

The technical solutions of the present invention are further described in detail by the following specific examples, but it should be noted that the following examples are only used for describing the content of the present invention and should not be construed as limiting the scope of the present invention.

Example 1

The research is carried out by taking a peony Tougui type variety 'zifengyu' planted in a peony germplasm resource garden of Yangzhou university horticulture and plant protection institute as a material, the variety is more common in cultivation and application in production, and the number of lateral branches on each main stem is 3-5:

(1)H₂O₂preparing a solution: 30% H used in the present invention₂O₂The reagent is purchased from Shanghai Lingfeng Chemicals Co., Ltd, and H is added when in use₂O₂Prepared into 50 mmol-L with distilled water^-1All solutions were ready for use.

(2) Treatment time: starting from the peony plants exposed to the ground and spreading leaves (3, 29, 2018), 80 plants with basically consistent growth conditions are selected, and H is carried out on the plants by using a sprayer respectively₂O₂Foliar spray treatment of solution and deionized water (control) until the main flower buds are exposed (26.4.2018)Day). Every spraying is carried out in the evening of sunny weather, and the front and back sides of plant leaves must be uniformly sprayed until the solution flows down along the leaf tips. Spraying the mixture once respectively for 29 days in 3 months, 5 days in 4 months, 12 days in 4 months, 19 days in 4 months and 26 days in 4 months in 2018, 5 times totally, and performing other management according to the daily management of a normal Paeonia lactiflora garden.

(3) Statistics of lateral branch characters and determination of other indexes: during the full-bloom period of the peony, the number of the side buds which grow well and can bloom is counted, the length and the diameter of the flower stem of the residual side buds are measured by using a vernier caliper (0-150, New measurement tool, Inc. in Taizhou city), and the diameter and the mechanical strength of the main branch are measured by using the vernier caliper and a digital display tensiometer (NK-2, Hui Er instruments, Inc. in Hangzhou province).

(4) And (3) measuring results: h₂O₂The results of the treatment and regulation of the growth and development of the lateral branches of the peony cut flowers are shown in fig. 1, the control lateral branches grow well, the flower buds can normally open, and H is₂O₂The growth and development of the lateral branches of the treated peony cut flowers are inhibited, and buds can not be opened normally due to atrophy. FIG. 2 is H₂O₂Treating the shape index H of cut side branch of peony in full-bloom stage₂O₂The number of the lateral branches after treatment is reduced by 90.90 percent, the length and the thickness of the lateral branches are respectively reduced by 83.46 percent and 52.93 percent, and the three reach extremely remarkable levels. Furthermore, H₂O₂The stem thickness and mechanical strength of the main stem under treatment were also very significantly increased compared to the control, respectively (fig. 3), and it can be seen that the method effectively improves the quality of the cut flowers of peony.

Example 2

Is substantially the same as in example 1 except that H₂O₂The concentration of the solution was 10 mmol. multidot. L^-1Spraying 6 times, monitoring according to the method of example 1, and obtaining the result H₂O₂The number of lateral branches after treatment is reduced by 73.20%, and the length and thickness of the lateral branches are reduced by 50.88% and 23.43% respectively. Furthermore, H₂O₂The stem thickness and mechanical strength of the main stem under treatment also showed a significant increase compared to the control, respectively.

Example 3

Is substantially the same as in example 1 except that H₂O₂The concentration of the solution was 100 mmol. multidot. L^-1After 4 spraying times and monitoring according to the method of example 1, H can be obtained₂O₂The number of the lateral branches after treatment is reduced by 85.80 percent, and the length and the thickness of the lateral branches are also reduced by 69.67 percent and 40.55 percent respectively. Furthermore, H₂O₂The stem thickness and mechanical strength of the main stem under treatment also showed a very significant increase compared to the control, respectively.

While the present invention has been described in detail with respect to the above embodiments, it should be appreciated that the above description should not be construed as limiting the invention and that various modifications and alterations to the invention will become apparent to those skilled in the art upon reading the above description. Accordingly, the scope of the invention should be determined from the following claims.

Claims

1. The application of hydrogen peroxide in regulating and controlling the growth and development of the side branches of the cut peony flowers is characterized in that a hydrogen peroxide solution is sprayed on the branches and leaves of the peony during the growth process from the leaf-expanding period to the full-bloom period of the peony.

2. The use according to claim 1, wherein the concentration of the hydrogen peroxide solution is 10 to 100 mmol-L^-1。

3. The application of claim 1, wherein the spraying frequency is once per week, and the spraying frequency is 4-6 times.

4. The use according to claim 1, characterized in that each spraying is selected to be carried out in the evening of sunny weather.

5. The use according to claim 1, wherein the application is carried out every time the application is carried out, the application must be carried out uniformly on the front and back sides of the plant leaves until the solution flows down the leaf tips.