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Breeding method of kelp early-maturing variety

A technology of kelp and varieties, which is applied in the field of breeding of early-maturing kelp varieties, can solve the problems that kelp varieties are difficult to obtain, and achieve the effects of saving seedling breeding costs, natural water temperature and low temperature

Active Publication Date: 2016-07-20
MARINE BIOLOGY INST OF SHANDONG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing summer seedlings and autumn seedlings cannot fully meet the needs of actual production. In production, especially the salted kelp processing plants need some early-maturing varieties, and they need to provide a large amount of thick-growing kelp in March to April. This is currently Hard-to-reach kelp varieties

Method used

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Effect test

Embodiment 1

[0028] The breeding method of the wild kelp early-maturing variety of the present invention is specifically:

[0029] 1. Cultivation of early-maturing kelp: Collect wild kelp in early November of the first year, select kelp with dark brown color and well-developed sporangia, and weave a 2m×4m composite rope net with a composite rope made of vinylon and polyethylene materials. The diameter of the rope is 0.5cm, and the mesh size is 20cm. Soak the composite rope net in fresh water for 1-7 days in advance, and dry it for later use.

[0030] 2. Picking seedlings: Select wild kelp to grow vegetables, place them in a cool place to dry and stimulate for 2-4 hours to promote the release of spores from the kelp, and then place them in a seedling pool with a water depth of not less than 30cm. The bottom of the seedling pool is pre-laid with a composite rope net made of vinylon and polyethylene materials for seedling picking, and 3-5 glass slides are placed at the same time for microsco...

Embodiment 2

[0037] The breeding method of hybrid kelp precocious variety of the present invention is specifically:

[0038] 1. Gametophyte seedlings: use kelp gametophytes with excellent production characteristics to separate male and female gametophytes. After vegetative propagation to the required quantity, the gamete seedlings are carried out in the first ten days of March in early March, the light is controlled at 0-3000lx, the water temperature is not higher than 17°C, and the attachment base is the composite rope net of the present invention. Grow indoors for 20 days, and after the seedlings developed by the gametophytes are firmly attached, they are moved to 0.5-1m of the sea surface water layer for cultivation.

[0039] 2. Seedling cultivation: After the kelp seedlings grow to 20cm, start to divide and thin out the seedlings. When thinning, leave 2-3 plants of the same size as a cluster, and the distance between clusters is about 10cm. Use kelp to raise the raft frame and length...

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Abstract

The invention discloses a breeding method of a kelp early-maturing variety, wherein the breeding method comprises the steps: 1) wild kelp seedling cultivation: at the beginning of November of a first year, gathering wild kelp spores; 2) postponing of a kelp autumn seedling mature period: thinning in March of a second year; moving an attached substrate down to a sea surface in March to November; lifting to a seawater surface in November of the second year; and making the kelp matured in April to May of a third year; 3) variety optimization: cultivating seedlings of mature kelp in April to May of the third year; and 4) new variety breeding: making the kelp matured in April to May of a fourth year, and carrying out batch seedling cultivation; and after selfing breeding or cross breeding for three generations or more, ultimately breeding the early-maturing variety which can stably inherited. The early-maturing variety cultivated seedlings having the maturing period in April are bred, and the problem of variety mixing with seedling cultivating varieties in August prevailing at present is solved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a breeding method for early-maturing kelp varieties. Background technique [0002] Cultured kelp originated in Japan, and has been cultivated in a large area for many years in my country, and has formed a rich geographical type. Since the early 1950s, my country has carried out genetic improvement of kelp, and has successively bred Haiqing No. 1, Haiqing No. 2, 901, Yuanza No. 10, Rongfu, Dongfang No. 2 kelp and more than a dozen fine varieties. [0003] Most of the existing kelp seedlings are summer seedlings. The maturity period in the north is generally from late June to early August. The time for kelp seedling cultivation is early August. There are mixed varieties of kelp cultured; moreover, varieties with late maturity, high temperature resistance and wide middle belt are generally used for seedling breeding, so the varieties of kelp in various places are be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 詹冬梅徐智广吕芳王翔宇辛美丽
Owner MARINE BIOLOGY INST OF SHANDONG PROVINCE
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