Method for advancing fruit maturation period of snowflake pears
By spraying a fruit ripening agent 15 days before the harvest of snow pears, the problems of time-consuming, labor-intensive, costly, and unstable effects of existing technologies for early ripening have been solved, thus achieving early ripening and improved quality of the fruit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HEBEI AGRICULTURAL UNIV.
- Filing Date
- 2025-12-22
- Publication Date
- 2026-04-10
AI Technical Summary
Existing technologies for advancing the ripening of snow pears suffer from problems such as time-consuming and labor-intensive operations, high costs, and unstable results, making it difficult to meet market demands.
Fifteen days before fruit harvest, spray a fruit ripening agent using a mixture of 200 μmol/L melatonin, 100 μmol/L jasmonic acid, or 200 μmol/L melatonin + 100 μmol/L jasmonic acid, applying 15 L to each fruit tree.
It increases the content of arbutin and soluble solids in early-harvested snow pears, reduces hardness and titratable acid content, and achieves earlier fruit ripening.
Smart Images
Figure CN121817192A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fruit and vegetable cultivation technology, and more specifically to a method for advancing the ripening period of snow pear fruits. Background Technology
[0002] Pear cultivation has a long history, dating back at least 3,000 years in my country. Hebei Province, as the largest pear-producing province, boasts a leading planting area and yield globally, holding a vital position in the agricultural economy. Snowflake pears, rich in arbutin, possess excellent cough-relieving and phlegm-reducing properties and are one of Hebei's main pear varieties. Currently, Zhaoxian County has a snowflake pear planting area of 9,133.3 hectares. As of 2022, Zhaoxian's snowflake pear production was approximately 330,000 tons, accounting for 55% of the county's total pear production, making it the most representative agricultural product of the region. However, the long fruit growth cycle of snowflake pears (approximately 5 months) and concentrated market availability lead to intense market competition, impacting farmers' economic benefits. Therefore, researching a method to advance snowflake pear ripening is crucial for improving the market competitiveness of snowflake pears and enhancing farmers' economic benefits.
[0003] Common methods for advancing fruit ripening include girdling, environmental regulation, and the use of plant growth regulators. While girdling can achieve early ripening, it is time-consuming, labor-intensive, causes significant damage to the tree, has high management costs, and is completely unsuitable for young, weak, aging, and dwarfed, densely planted pear trees. Cultivation management, through pruning and fertilization, can also advance fruit ripening; it is safe and easy to operate, but its effect on early ripening is relatively limited and cannot meet market demand for significantly earlier ripening. Environmental regulation, using greenhouses for temperature control and supplemental lighting, can achieve early ripening with precise control and is not limited by the natural environment, but the facilities are too expensive and energy-intensive, and it is difficult to implement in large-scale open-field orchards. Spraying plant growth regulators such as ethephon and gibberellin is the most commonly used method for advancing fruit ripening; although it is fast-acting and low-cost, the concentration is difficult to control, and the effect is unstable due to significant differences in varietal sensitivity. Each of these methods has limitations in terms of operation, cost, and varietal applicability. Therefore, researching a method to accelerate the ripening of snow pears is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0004] In view of this, the present invention provides a method for advancing the ripening period of snow pear fruit.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A method to advance the ripening period of snow pear fruit involves spraying the fruit trees with a fruit ripening agent 15 days before the fruit is harvested. The fruit ripening agent is any one of 200 μmol / L melatonin, 100 μmol / L jasmonic acid, or a mixture of 200 μmol / L melatonin and 100 μmol / L jasmonic acid.
[0006] Furthermore, the spraying amount for each fruit tree is 15L.
[0007] Further, to prepare the 200 μmol / L melatonin, the melatonin was first dissolved in a small amount of anhydrous ethanol and then diluted with distilled water to the corresponding concentration.
[0008] Furthermore, to prepare the 100 μmol / L jasmonic acid, the jasmonic acid was directly diluted with distilled water to the corresponding concentration.
[0009] Furthermore, to prepare the 200 μmol / L melatonin + 100 μmol / L jasmonic acid mixture, the melatonin is first dissolved in a small amount of anhydrous ethanol, then jasmonic acid is added, and finally dilute with distilled water to the corresponding concentration.
[0010] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of the present invention are as follows: This invention can increase the content of arbutin and soluble solids in early-harvested snow pears, and reduce hardness and titratable acid content. The combined changes in these indicators strongly demonstrate that snow pears have achieved early maturity. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0012] Figure 1 The content of arbutin in snow pear fruit under different treatments; Figure 2 The soluble solids content of snow pear fruit under different treatments; Figure 3 The firmness of snow pear fruit under different treatments; Figure 4 The acid content of snow pear fruit under different treatments can be titratable. Detailed Implementation
[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0014] Example 1 A method for accelerating the ripening of snow pear fruit includes the following steps: This invention selected 12 snow pear trees and treated them with melatonin (MT) and jasmonic acid (JA) solutions. Four concentrations were used for the treatment: 100JA (100 μmol / L), 200MT (200 μmol / L), 100JA+200MT, and a water control.
[0015] (1) Preparation of melatonin solution: To prepare a 200 μmol / L melatonin solution, first dissolve the melatonin in 5‰ anhydrous ethanol, then add distilled water to prepare a 200 μmol / L melatonin solution; prepare a total of 45 L of solution, and prepare it fresh for each use.
[0016] Melatonin 2.0925g, water 45L; (2) Preparation of jasmonic acid solution: Prepare jasmonic acid solution with a concentration of 100 μmol / L. Jasmonic acid can be directly diluted with water. Prepare a total of 45 L of solution, and prepare it fresh for each use.
[0017] 945 μL of jasmonic acid stock solution, 45 L of water; (3) Preparation of jasmonic acid + melatonin combination solution: A total of 45 L of solution was prepared for this treatment, with jasmonic acid concentration of 100 μmol / L and melatonin concentration of 200 μmol / L. The solution was prepared fresh for each use.
[0018] Jasmonic acid stock solution 945μL, melatonin 2.0925g, water 45L; (1) On August 30, 2024 (15 days before fruit harvest), spraying treatment was carried out. There were control and three treatments of melatonin and jasmonic acid solution. Each treatment was prepared with 45L solution for spraying. Three trees were sprayed with water as control; the remaining nine trees were sprayed with 100JA, 200MT and 100JA+200MT respectively, that is, one concentration was sprayed on three trees.
[0019] (2) On September 14, 2024 (i.e., 15 days after spraying), a second sampling was conducted. Three healthy pears of the same size and with smooth surfaces were taken from the sunny and shady sides of each tree, i.e., 6 fruits were taken from each tree, and a total of 18 fruits were taken from each treatment.
[0020] The fruits obtained in step (2) were brought back to the laboratory to determine their quality and evaluate their maturity. First, the soluble solids content of the fruits was determined using a portable saccharimeter, and the firmness of the fruits was determined using a hardness tester. Then, the fruits were peeled and the pulp was cut into uniformly sized pieces. The peels and pulp of the control and the other three treatments were mixed together. The peels and pulp were then wrapped separately with aluminum foil, labeled, flash-frozen in liquid nitrogen, and stored in a -80°C freezer for the purpose of determining the titratable acid and arbutin content of the fruits.
[0021] The contents of arbutin, soluble solids, titratable acid, and fruit firmness in the control and three treated fruits were determined separately. The average values were taken, and the results are shown in the table below. Figure 1-4 .
[0022] Depend on Figure 1 It can be seen that the content of 100JA + 200MT group was relatively the highest, followed by 200MT group, and CK group was relatively the lowest; CK was significantly different from 100JA + 200MT and 200MT groups, while 200MT was not significantly different from 100JA + 200MT.
[0023] Depend on Figure 2 It can be seen that the 100JA, 200MT, and 100JA + 200MT treatments can effectively increase the soluble solids content, and there is no significant difference in the effect among the three treatment groups, but the difference from the CK group is significant.
[0024] Depend on Figure 3 It is known that 100JA treatment alone will reduce hardness, 200MT treatment alone has little effect on hardness, and the combined treatment of the two can improve the hardness reduction caused by 100JA treatment alone.
[0025] Depend on Figure 4 It can be seen that the 200MT treatment can effectively reduce the titratable acid content, and the difference is significant compared with the CK group; the effects of the 100JA and 100JA + 200MT treatments on the titratable acid content are between those of the CK and 200MT groups.
[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A method for advancing the ripening period of snow pear fruit, characterized in that, Spray the fruit trees with a fruit ripening agent 15 days before the fruit is harvested. The fruit ripening agent is any one of 200 μmol / L melatonin, 100 μmol / L jasmonic acid, or a mixture of 200 μmol / L melatonin and 100 μmol / L jasmonic acid.
2. The method according to claim 1, characterized in that, The spraying amount is 15L per fruit tree.
3. The method according to claim 1, characterized in that, To prepare the 200 μmol / L melatonin, first dissolve the melatonin in a small amount of anhydrous ethanol, then dilute it with distilled water to the corresponding concentration.
4. The method according to claim 1, characterized in that, To prepare the 100 μmol / L jasmonic acid solution, dilute the jasmonic acid directly with distilled water to the corresponding concentration.
5. The method according to claim 1, characterized in that, To prepare the 200 μmol / L melatonin + 100 μmol / L jasmonic acid mixture, first dissolve the melatonin in a small amount of anhydrous ethanol, then add the jasmonic acid, and finally dilute with distilled water to the corresponding concentration.