Tilapia genome selective breeding method

Abstract

The invention provides a method for cultivating disease-resistant tilapia improved varieties based on a genome selection technology. The method comprises the following steps: selecting an optimal SNPmarker density by comparing the prediction accuracy of GBLUP and Bayes Cpi under different marker densities; evaluating the prediction accuracy of other genome selection methods under the selected marker density; and comprehensively considering calculation time and prediction accuracy, and selecting a genome estimation breeding value method suitable for disease-resistant breeding of tilapia. The invention provides the method for rapidly and accurately estimating the tilapia disease-resistant trait genome estimation breeding value, wherein the filial generation disease resistance obtained by using the method is higher than the filial generation disease resistance of a control group. By using the method, breeding of disease-resistant tilapia varieties can be accelerated, the tilapia breedingyield is increased, and healthy development of the tilapia breeding industry is promoted.

Description

technical field [0001] The invention belongs to the technical field of aquatic genetics and breeding, and in particular relates to a method for cultivating improved tilapia disease-resistant varieties based on whole genome selection. Background technique [0002] my country began to introduce tilapia in the 1950s. After decades of hard work, it has successively overcome a series of problems such as distant hybridization, artificial breeding, large-scale farming and commercial fish processing, making my country the world's largest producer and exporter of tilapia. country with the largest volume. At present, tilapia production areas are mainly located in Guangdong, Hainan, Guangxi, Yunnan and Fujian, with an annual output of about 1.8 million tons and an export volume of about 400,000 tons. Among them, Gifu tilapia is the leading species of tilapia farming in my country, and the farming area accounts for about 60% of the total area of ​​the country. However, with the rapid d...

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Problems solved by technology

[0004] The purpose of the present invention is to establish a method for cultivating disease-resistant tilapia improved species based on genome selection technology, to improve the problems of low accuracy and slow progress in traditional breeding methods, and to provide molecular breeding for cultivating disease-resistant tilapia method to promote the rapid development of tilapia disease-resistant breeding and ensure the stable and healthy development of tilapia aquaculture

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