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KMethod for carrying out germchit production for brown alga sargassum through breeding induction and controlled fertilization

A technology of hijiki and brown algae, which is applied in the field of marine biology, can solve problems affecting production promotion, ovulation and sperm discharge, and poor attachment of seedlings, so as to achieve the effect of improving attachment efficiency

Inactive Publication Date: 2006-02-01
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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Problems solved by technology

Scholars in South Korea and China have carried out a number of researches and achieved phased results. However, until today, they have not been widely used in production, and there are still technical constraints
It is manifested in that (1) the timing of sexual maturity of dioecious Hijiki is different under different ecological environment conditions in nature, resulting in low fertilization efficiency (less than 10%), and the phenomenon of ovulation and non-ejaculation is common; (2) traditional What utilize the technology that falls off young sporophyte to gather seedlings to use is to have the young sporophyte of rhizoid, thus cause seedling to be not firmly attached, take off seedling seriously, have influenced the popularization of production; (3) the problem of high water temperature in summer

Method used

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  • KMethod for carrying out germchit production for brown alga sargassum through breeding induction and controlled fertilization

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Embodiment Construction

[0017] like figure 1 As shown, the cultivation water tank system mainly includes a cultivation water tank 2 filled with seawater and a female vegetable 5 and a male vegetable 6 placed therein, and the circulation of the vegetable is promoted by introducing air bubbles 4 .

[0018] (1) Sexual reproduction induction technology: adopt water tank culture system ( figure 1 ), select male and female vegetables, cultivate them with seawater, control the cultivation temperature at 15-20°C, control the light cycle at 16 hours / day, control the light intensity at 10000-15000 lux (lux), change the water 1-2 times a day, Cultivate for 1-2 months to form a vegetable with male and female reproductive trays.

[0019] (2) Synchronous discharge of ovum and sperm: adopt water tank culture system ( figure 1 ), select nature or the above-mentioned artificially induced planting vegetables with male and female reproductive trays, the ratio of male and female planting vegetables is 2:1, cultivate w...

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Abstract

A process for culturing the seedlings of Sargassum fusiforme by inducing reproduction and controlling fertilization includes such steps as providing seawater tank, choosing the seed sargassum fusiforme with male and female receptacles, controlling circulating time, illumination intensity and temp for synchronous mature and discharge of sperm and egg, fertilization, collecting fertilized eggs, inoculating the young sporophytes to attachment, and culturing in seawater at 20-25 deg.C for 1-2 months.

Description

technical field [0001] The invention relates to marine biological technology, in particular to a method for inducing the reproduction of brown alga Hizikia fusiformis and producing seedlings by regulating fertilization. Background technique [0002] Hijiki is an economical edible seaweed that is mainly cultivated in Korea, Japan and China. There are more than 20 years of breeding history in my country, and the main breeding area is Zhejiang Province. The seedlings used in the artificial cultivation of Hizikia fusiformis mainly come from the regeneration of rhizomes. It is a worldwide problem to use the law of sexual reproduction of brown algae Hizikia fusiformis to cultivate seedlings. Scholars in South Korea and China have conducted many studies and achieved phased results. However, until today, they have not been widely used in production, and there are still technical constraints. It is manifested in that (1) the timing of sexual maturity of dioecious Hijiki is differen...

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Application Information

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IPC IPC(8): A01G33/00
CPCY02A40/80
Inventor 逄少军陈兰涛孙建章
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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