Three-element crossed breeding method for Japanese scallop

Abstract

The invention relates to a patinopecten yessoensis ternary cross breeding method. Firstly the artificial cultivation accelerated ripening is implemented for the Russian patinopecten yessoensis. Secondly the artificial cultivation accelerated ripening is implemented for the Chinese patinopecten yessoensis. At the same time, the gonad maturation is achieved. A heating mode is utilized to the above patinopecten yessoensis for induced spawning, and the sperms and the eggs are respectively collected. The hybridization is implemented between the Chinese female scallop eggs and the Russian male scallop sperms or between the Chinese male scallop sperms and the Russian female scallop eggs, thus the first filial generation Chinese-Russian or Russian-Chinese two sorts of patinopecten yessoensis colonies which can be cultivated within two years with the conventional suspended longline farming method. The Janpanese patinopecten yessoensis and the Chinese-Russian or the Russian-Chinese patinopecten yessoensis are taken as the parents for the artificial cultivation accelerated ripening. At the same time, the gonad maturation is achieved. A heating mode is utilized to stimulate the induced spawning, and the sperms and the eggs collected are respectively selected for the implementation of hybridization. Thereby the multiple Russian-Chinese-Japanese, Japanese-Chinese-Russian or Janpanese-Russian-Chinese patinopecten yessoensis colonies are obtained, which can be cultivated with the conventional suspended longline farming method. The method is simple, practical with low cost. The patinopecten yessoensis antiviral ability is enhanced. Moreover the survival rate and the livability are high. The offspring heterozygosity is also enhanced through the group fertilization.

Description

technical field [0001] The invention relates to a breeding method, in particular to a three-way hybrid breeding method of scallops. Specifically, it is a breeding method that uses three different geographical populations of Ezo scallops to carry out triple hybridization. Background technique [0002] Hybridization refers to the mating between two different types of breeds or strain parents. In breeding, this type of hybridization is called binary hybridization. Three-way hybridization is a hybridization method in which two varieties or populations are used to hybridize first, and the first generation of hybrid seeds produced is then hybridized with a third variety or population after the ontogeny matures to produce the second generation of hybrid seeds. The cross-mating is carried out between three different types of parents, and this cross-breeding method can be greater than binary cross-breeding in the utilization of heterosis. First of all, under the whole hybrid system...

AI Technical Summary

Problems solved by technology

[0005] At present, in my country, scallop seedlings are produced by self-propagation of imported populations from Japan. The disadvantages of this production method are: inbreeding leads to the degradation of traits, resulting in poor disease resistance, low survival rate, and frequent large-scale death of scallops