A kind of breeding method of fragrant long hybrid oyster strain

A breeding method and technology of growing oysters, which are applied in the field of breeding of new strains of Xianglong hybrid oysters, can solve the problems of less success and no heterosis in interspecific hybridization, and achieve the goal of increasing yield, accelerating directional purification rate, and high yield Effect

Active Publication Date: 2016-01-20
乳山市深海生物科技有限公司
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Problems solved by technology

In 1993, Gaffney & Allen summarized the interspecific hybridization of Oyster oysters. Although there were many reports on distant hybridization of Oyster oysters, there were few real successes. The reports mainly focused on the early phenotypic traits of the first generation of hybrids. Research, and almost all interspecific crosses have not obtained significant heterosis

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  • A kind of breeding method of fragrant long hybrid oyster strain

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Embodiment 1

[0019] a. Preparation of the first generation of hybrid seeds: In July 2011, the female individuals of the Hongkong oyster Crassssotreahongkongensis and the male individuals of the long oyster C. ), and Hong Kong oyster self-propagation group (HH) and long oyster self-propagation group (GG) were set as controls. When the offspring of the three experimental groups were 60 days old, the height of juvenile shells grew to 10-15mm, and they were prepared as individual oysters.

[0020] b. Detection of environmental effects: Place the offspring of the three experimental groups HG, HH, and GG in 40×30 cm mesh bags made of 20-mesh sieve tulle, 120 per mesh bag, 60 bags for each experimental group. They were cultivated in the natural distribution area of ​​long oyster in Zhuanghewan, Dalian in the north of my country with low temperature and high salinity, and in the natural distribution area of ​​Hong Kong oyster in Guandu, Zhanjiang, south my country, with high temperature and low sa...

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Abstract

The invention discloses a breeding method for the new line of hybrid Crassostrea hongkongensis and Crassostrea gigas. According to the technical links of one generation preparation of the female Crassostrea hongkongensis and male Crassostrea gigas hybrid seed, environmental effect detection, breeding potential assessment, optimal class group selection self propagation and the like, a new line of hybrid gigas suitable to the local place can be obtained by 3-4-generation breeding. According to the breeding method for the new line of the hybrid Crassostrea hongkongensis and Crassostrea gigas, which is disclosed by the invention, gametogamy sovereignty nuisance between gigas seeds is overcome; a series of problems of slow growth speed, weak viability and exceeding sterility of hybrid F1 can be solved; the selection function on an excellent gene type by environmental stress is quickened; a breeding method suitable for the local new line of Crassostrea hongkongensis and Crassostrea gigas can be created. According to the new line bred with the breeding method disclosed by the invention, the applicable range on the temperature and the salinity by the gigas is widened, and the yield is improved by more than 30% (if being compared with parents). The breeding method for the new line of Crassostrea hongkongensis and Crassostrea gigas has the advantages of strong practicality, easiness in popularization and the like.

Description

Technical field: [0001] The invention belongs to the technical field of shellfish seed breeding in marine agriculture, and in particular relates to a method for cultivating a new strain of fragrant long hybrid oyster. Background technique: [0002] Interspecific hybridization is one of the basic breeding methods of animals and plants. Its characteristics are that it can significantly expand the gene pool of animals and plants, promote interspecific exchanges, introduce beneficial genes of different species, create new variant types, and even synthesize new species ( Lou Yundong, 1999). [0003] The distant hybridization of shellfish originated from oysters. As early as 1882, Bouchon-Brandely carried out the interspecific hybridization between Portuguese oyster (Ostrea angulata) and European oyster (O.edulis). In 1950, Davis studied the interspecific hybridization of Pacific oyster O.gigas×American oyster O.virginica and American oyster×Olympia oyster O.lurida. Subsequently...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 张跃环喻子牛肖述张扬
Owner 乳山市深海生物科技有限公司
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