Method for breeding pure-line full-male hybridized pelteobagrus fulvidraco and parents thereof

Abstract

The invention discloses a method for breeding pure-line full-male hybridized pelteobagrus fulvidraco and parents thereof. The method comprises the steps: picking wild original-line pelteobagrus fulvidraco and pelteobagrus vachelli with excellent characters from a Dongting Lake water system, synchronously applying cell-engineering genetic breeding technologies to carry out purification and rejuvenation on wild original-line varieties, so as to selectively breed pure-line full-female pelteobagrus fulvidraco and pure-line full-female pelteobagrus vachelli; researching and developing high-qualitysupermale pelteobagrus vachelli by taking the pure-line full-female pelteobagrus vachelli as raw fish; and establishing pure-line full-female and supermale pelteobagrus vachelli germplasm banks. Through subjecting original breeds to repeated purification and rejuvenation, fries can be pure, and genetic genes are stable and controllable. High-quality supermale pelteobagrus vachelli and pure-line full-female pelteobagrus fulvidraco are combined, and thus, pure-line full-male hybridized pelteobagrus fulvidraco fries are artificially bred on a large scale. According to the method, the problems that hybridized pelteobagrus fulvidraco germplasm is deteriorated one after one generation, growth advantages are lowered, the disease resistance and stress resistance are weak, and the like are thoroughly solved from parent sources; and starting from the fries, a whole process of culture is fundamentally free of drugs, so that food safety is ensured.

Description

technical field [0001] The invention belongs to the technical field of fish cell engineering genetic breeding, and in particular relates to a breeding method for pure-line all-male hybrid yellow catfish and its parents. Background technique [0002] Hybrid breeding technology is widely used because of the hybrid vigor of hybrid seedlings. However, the breeding, purification and rejuvenation of the parental parents of hybrid yellow catfish has been neglected by people. In addition, the inbreeding of the commercial fish sieve bottom "hairy hairy fish" has been used as the parent year after year, and the germplasm has deteriorated sharply. endanger food safety. Although there are many traditional breeding methods, the one with the best effect is 14 consecutive generations of brothers and sisters inbreeding and breeding fine varieties. However, this method takes 14-20 years, and if there is a slight error in the middle link, all previous efforts will be wasted. Start over. Ho...

AI Technical Summary

Problems solved by technology

Although there are many traditional breeding methods, the one with the best effect is 14 consecutive generations of brothers and sisters inbreeding and breeding fine varieties. However, this method takes 14-20 years, and if there is a slight error in the middle link, all previous efforts will be wasted. start over

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