KR-102963678-B1 - Management methods for shortening the maturity period of the jalpy seeds and improving the germination rate

Abstract

The present invention provides a management method for shortening the maturation period of seagrass seeds and improving the germination rate, comprising a maturation step in which seagrass seeds are introduced into a water tank where water is stored and matured for a preset maturation time, and said seagrass seeds are matured through a water temperature stimulus in a manner that changes the water temperature of the tank in response to seasonal changes.

Inventors

• 박상언
• 안동영
• 김태후
• 박용우
• 심창명
• 이영권
• 양정규
• 김세아
• 주우종

Assignees

• 한국수산자원공단

Dates

Publication Date

20260511

Application Date

20240912

Claims (7)

1. The method includes a maturation step in which seagrass seeds are introduced into a tank where water is stored and matured for a preset maturation time, wherein the seagrass seeds are matured through a water temperature stimulus that changes the water temperature of the tank in response to seasonal changes. The above maturation stage is, It includes a water temperature control step of changing the water temperature at each preset reference cycle so that during the maturation time, the water temperature of the tank has at least two of the first to fourth temperatures corresponding to spring, summer, autumn, and winter, respectively. The above water temperature control step is, The water temperature of the above tank is sequentially changed to the first to fourth temperatures at each of the above reference cycles, and A management method for shortening the maturation period of seagrass seeds and improving the germination rate, wherein the first temperature is set to 13 to 17℃, the second temperature is set to 18 to 22℃, the third temperature is set to 13 to 17℃, and the fourth temperature is set to 2 to 6℃.
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5. In paragraph 1, The above maturation stage is, A management method for shortening the maturation period of seagrass seeds and improving the germination rate, comprising, when the maturation time remains after the above-mentioned water temperature control step is completed, further including a low-temperature maintenance step of maintaining the water temperature of the tank separately at a low-temperature management temperature during the remaining time.
6. In paragraph 1, The above maturation stage is, A management method for improving seagrass seed maturation and germination rate, further comprising a water replacement step of continuously replacing the water in the tank at a constant replacement rate while performing the above water temperature control step.
7. In paragraph 1, A management method for shortening the maturation period of seagrass seeds and improving the germination rate, further comprising a sowing preparation step of changing the water temperature of the tank to a preset sowing waiting temperature and maintaining it for a certain waiting period after completing the maturation step.

Description

Management methods for shortening the maturity period of the jalpy seeds and improving the germination rate The present invention relates to a management method for shortening the maturation period of seagrass seeds and improving the germination rate, and more specifically, to a management method for shortening the maturation period of seagrass seeds and deriving optimal conditions to increase the germination rate by controlling the water temperature in which the seagrass seeds are managed. Generally, seagrass, a type of marine flowering plant, is a marine flowering plant that flowers, pollinates, and forms fruit. Its rhizomes and root tissues not only stabilize sediments and possess a natural purification function capable of absorbing and removing pollutants such as heavy metals, but also, due to its excellent photosynthetic activity, seagrass habitats serve as spawning and nursery grounds for marine organisms. Furthermore, as it holds information regarding biodiversity and the coastal environment, it occupies an indispensable and important position in estuarine and coastal ecosystems. However, recent marine pollution and the physical destruction of coastal environments are accelerating the degradation of seagrass communities and are being raised as a serious problem in terms of marine environmental conservation and fisheries resource protection. Furthermore, it is a global trend that seagrass communities are decreasing or being destroyed in coastal fishing grounds due to indiscriminate coastal development and environmental pollution, and that various marine biological resources are declining (Fujita, 1987). Therefore, to address these issues, efforts to restore seagrass habitats are being actively pursued not only at the national level but also among domestic scholars, and recently, the development of technologies for establishing and managing seagrass forests using seagrass seeds is being carried out extensively both domestically and internationally (Yi Mei Tan et al 2020.). Accordingly, the development of seed management technology utilizing the above-mentioned seagrass seeds is actively underway, and a representative example is the vernalization management method using cold storage (Park et al. 2014). However, the vernalization management method using refrigeration has disadvantages, such as the difficulty in analyzing the environment in which seagrass forests are well formed in nature due to differences from the natural maturation conditions of seagrass seeds, the need for continuous exchange of air and seawater to suppress hydrogen sulfide generation, and the problem of low moisture content and germination rate of seagrass seeds. In addition, the vernalization management method using refrigeration has the problem that it is not practical because securing refrigeration equipment and space is complex and bulky. Accordingly, there is a need for technology regarding seagrass seed management methods that are easier to manage, shorten the seed maturation period, and effectively improve the germination rate. Figure 1 is a graph showing the variation in survival rate of seagrass seeds by case. Figure 2 is a graph of the ratio of seed coat thickness to short diameter for each case of seagrass seeds. Figure 3 shows the embryonic maturity result of seagrass seeds corresponding to CASE 4. Figure 4 shows the embryonic maturity results of seagrass seeds corresponding to CASE 1-3. Figure 5 is a graph of the indoor germination rate test of seagrass seeds corresponding to CASE 1-1. Figure 6 is a graph of the indoor germination rate test of seagrass seeds corresponding to CASE 1-2. Figure 7 is a graph of the indoor germination rate test of seagrass seeds corresponding to CASE 1-3. Figure 8 is a graph of the indoor germination rate test of seagrass seeds corresponding to CASE 2. Figure 9 is a graph of the indoor germination rate test of seagrass seeds corresponding to CASE 3. Figure 10 is a graph of the indoor germination rate test of seagrass seeds corresponding to CASE 4. Figure 11 is a graph of the indoor germination rate condition variation test of seagrass seeds. The present invention is not limited to the specific embodiments described below and should be understood to include all variations, equivalents, and substitutions that fall within the spirit and scope of the invention. The terms used in this specification are for describing specific embodiments and are not intended to limit the invention. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms such as "include" or "have" imply the possibility of including additional configurations or functions beyond those described in the specification. Terms such as "first," "second," etc., are not intended to limit the components but are intended to distinguish one component from another. Hereinafter, an example of a management method for shortening the maturation period of seagrass seeds and improving the germination