Seedling-raising method for gracilaria algae

A technology of Gracilaria and seaweed, applied in the field of seedling cultivation of Gracilaria genus seaweed, can solve the problems of low survival rate, slow growth, small seedlings, etc., and achieve the problem of germplasm degradation, high agar content, and fast growth of seedlings Effect

Active Publication Date: 2015-04-29
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology is to directly attach the spores to the substrate (such as seedling ropes, stones, etc.) to cultivate, so that the seedlings occupy a large area of ​​the seedling room, the temperature control energy consumption is high, the seedlings are insufficient, and the survival rate is low. Long, the seedlings are small and grow slowly, and the area required for nursery ponds is large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Preparation for planting algae: collect mature asparagus algae (fruit sporophytes, tetraspores), select algae strains that are robust and mature, and cut off old branches with a large number of miscellaneous algae attached to the surface of the base of the algae For the algae part, the algae with a smooth surface, bright colors, no obvious attachments and necrotic tissue is used as a seed algae, washed, and the miscellaneous algae and other attached organisms are removed;

[0027] 2. Cleaning of algae: scrub the picked algae in boiled fresh water 3 times, then disinfect the algae with 3% sodium hypochlorite for 4 minutes to further remove possible residual algae and protozoa, and finally rinse in boiled fresh water Then put it in boiled sea water for later use;

[0028] 3. Drying stimulation in the shade: place the grown vegetables in a cool place with good air circulation for drying stimulation in the shade for 50 minutes, and the dehydration rate is controlled at 2...

Embodiment 2

[0039] 1. Preparation for planting algae: collect mature Gracilaria algae (carp sporophytes, tetrasporophytes), cut it into sections, take the algae sections with smooth surface, bright color, no obvious attachments and necrotic tissue as algae, Wash to remove algae and other parasites;

[0040] 2. Algae cleaning: scrub the picked algae in boiled fresh water for 3 times, then disinfect the algae with 3% sodium hypochlorite for 3 minutes to further remove possible residual algae and protozoa, and finally rinse in boiled fresh water Then put it in boiled sea water for later use;

[0041] 3. Drying stimulation in the shade: place the grown vegetables in a cool place with good air circulation for drying stimulation in the shade for 50 minutes, and the dehydration rate is controlled at 30-40%;

[0042] 4. Spore release: After the vegetables are stimulated by drying in the shade, put them in a container with sterilized seawater with a salinity of 30‰ and a glass plate at the bottom...

Embodiment 3

[0052] 1. Recovery: Take out the cultured tissue of Asparagus discus that has been stored under low light at 10°C for 1 year, replace 1 / 3 of the culture solution each time, and culture for 2 days under the light intensity of 500lux, 1000lux 2 days under the light intensity of 2500 lux, and then placed under the light intensity of 2500lux and aerated for 2 days to complete the recovery;

[0053] Add 4ppm of NO in every cubic meter of sterilized seawater in the container 3 -N and 0.4ppm PO 4 -P;

[0054] 2. Expansion of cultivation: the asparagus discoid tissue after the resuscitation is chopped with a masher, placed in the Erlenmeyer flask of sterilized seawater with a salinity of 30‰, and added 8ppm diacetate to the seawater culture solution. Germanium oxide is cultured in suspension for 10-15 days at a light intensity of 2500lux, a photoperiod of 12:12, and a temperature of 20±2°C. This step is carried out in cycles, so as to realize the expanded cultivation of germplasm; ...

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Abstract

The invention relates to a seedling-raising way for algae, in particular to a seedling-raising method for gracilaria algae. The method comprises the following steps: disinfecting cleaned mature gracilaria algae with sodium hypochlorite for 3-5 minutes, flushing the disinfected gracilaria algae with boiled fresh water, and putting the flushed gracilaria algae into boiled seawater for serving as breeding algae in later use; drying the breeding algae in the shade, stimulating, releasing spores, growing a disk-shaped body, performing suspension cultivation after scraping the disk-shaped body, performing enlarged cultivation, inducing the formation of vertical branches, and performing gradual cultivation to prompt growth of seedlings. By adopting the seedling-raising method, the entire spore seedling-raising process is implemented in a relatively small and controllable three-dimensional space, the seedling-raising amount is large, the survival rate is up to 90-100 percent, seedlings grow rapidly, the emergence rate is high, and gracilaria seedlings which are uniform in size and are 5 centimeters in length can be cultivated within 30-60 days.

Description

technical field [0001] The invention relates to a method for raising seaweeds, in particular to a method for raising seaweeds of the genus Gracilaria. Background technique [0002] my country is the world's largest seaweed country, and the production of artificially cultivated seaweed accounts for 70% of the world's total. In recent years, great achievements have been made in the development and utilization of algae in my country. The food processing, chemical industry, health care products and seaweed fertilizer industries using algae as raw materials have developed rapidly. No matter in terms of industrial scale or export trade, they occupy an important position in the world and have initially formed An industrial group from seaweed nursery, cultivation, processing to finishing. The seaweed industry has become one of the important pillar industries of my country's marine economy. However, the proportion of my country's seaweed farming industry in the fishery is still rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G33/02
Inventor 王广策林阿朋
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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