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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, large-scale application, etc., and achieve the effect of improving attachment efficiency

Inactive Publication Date: 2007-10-17
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] As shown in Fig. 1, the cultivation water tank system mainly includes a cultivation water tank 2 containing seawater, and a female vegetable 5 and a male vegetable 6 placed therein to promote the circulation of the vegetable by introducing air bubbles 4 into it.

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

[0019] (2) Simultaneous discharge of eggs and sperm: using a water tank culture system (Figure 1), select natural or artificially induced planting vegetables with male and female reproductive receptacles, the ratio of male and female planting vegetables is 2:1, and cultured with seawat...

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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 biotechnology, in particular to a method for inducing the reproduction of the brown alga Hijikia fusiformis and using regulated fertilization for seedling production. Background technique [0002] Hijiki is a kind of edible economic seaweed, 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 breeding of hijiki are mainly derived from the regeneration of false roots. It is a worldwide problem to use the law of sexual reproduction of hijikia (Hizikia fusiformis) to cultivate seedlings. Scholars from South Korea and China have successively conducted a number of studies and achieved phased results. However, as of today, it has not been widely used in production, and there are still technical constraints. It is manifested in (1) the timing of sexual maturation of dioecious hijiki under dif...

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Application Information

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Patent Type & Authority Patents(China)
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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