Litopenaeus vannamei base population establishing method based on genetic information and excellent properties

A technology for excellent traits and basic populations, applied in the field of genetics and breeding, can solve the problems of high inbreeding level of basic populations, insufficient genetic variation, limited progress in shrimp breeding, etc., to achieve good economic benefits, enrich genetic variation, and avoid inbreeding. Effect

Inactive Publication Date: 2013-12-04
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for constructing the basic population of Litopenaeus vannamei based on genetic information and excellent characters. The present invention has obtained the basic population of Litopenaeus vannamei with higher genetic diversity and more e...

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  • Litopenaeus vannamei base population establishing method based on genetic information and excellent properties
  • Litopenaeus vannamei base population establishing method based on genetic information and excellent properties
  • Litopenaeus vannamei base population establishing method based on genetic information and excellent properties

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Embodiment 1

[0026] The method for constructing the basic population of Litopenaeus vannamei based on genetic information and excellent characters of the present invention comprises the following steps:

[0027] 1. According to the goal of Litopenaeus vannamei improved breeding, 7 Litopenaeus vannamei species were introduced in batches from different foreign breeding companies for traits such as fast growth, strong disease resistance, strong stress resistance, high survival rate and adaptability to high-density feeding. For the fine-bred population of Penaeus penaeus, all introduced groups and individuals within the group were numbered, and the numbers and names of the groups are shown in Table 1.

[0028] The specific steps are: comprehensively inspect the excellent germplasm resources owned by different foreign Litopenaeus vannamei breeding companies; according to the needs of breeding objectives, introduce foreign germplasm resource groups with different excellent traits, and record the ...

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Abstract

The invention provides a Litopenaeus vannamei base population establishing method based on genetic information and excellent properties. The method comprises the following detail steps that multiple Litopenaeus vannamei populations with different excellent properties are selected, the genetic relationship among introduced individuals is analyzed by using molecular markers, a hybridization scheme is designed based on the genetic relationship information and excellent property information, and a great numbers of families are established to form a Litopenaeus vannamei base population with relative abundant heritable variation and excellent properties. According to the method, in the establishing process of the Litopenaeus vannamei base population, the molecular markers are used for detecting the genetic relationship among different individuals and designing the hybridization scheme, inbreeding can be avoided, genetic linkages can be broken through, sufficient recombination and orientated mating can be acquired, continuity and scientificity of breeding work are guaranteed, thus the acquisition of Litopenaeus vannamei base populations with the relative abundant heritable variation and excellent properties can be facilitated, therefore, genetic improvement and production performance improvement can be further carried out on the later generations of the Litopenaeus vannamei to a large extent, and better economic benefit is brought.

Description

technical field [0001] The invention belongs to the technical field of genetic breeding, and in particular relates to a method for constructing a basic population of Litopenaeus vannamei based on genetic information and excellent characters. Background technique [0002] To carry out selective breeding for improvement in breeding, there must be a complete basic population, which is also an important basis for breeding. As a basic population, it must have rich genetic variation and excellent genes that need to be improved. Practice has proved that establishing a population with a rich genetic base is the key factor to improve the breeding effect, but the larger the population, the better, because the more material in the population, the greater the chance of bad genes being mixed into the population, which will inevitably affect the germplasm of the basic population. In order to ensure the genetic diversity of the basic population, reduce the infiltration of bad genes, and s...

Claims

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Application Information

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IPC IPC(8): A01K61/00C12Q1/68
CPCY02A40/81
Inventor 卢霞栾生王伟继孔杰
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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