A method for cultivating fuchsia high temperature resistant hybrid seedlings

Abstract

The invention relates to a method for cultivating a high temperature-resistant amaranthine hybrid seed, and the hybrid seed. The method comprises the following steps: S1, scallop population hybridization of Bohai Sea Red scallop parents with fully-developed sexual glands, and high temperature-resistant natural selection of hybridization progenies in a southern sea area to obtain a first-generationBohai Sea Red scallop high temperature-resistant breeding line; S2, obtaining of a hybridization progeny with mature A.i. concentricus Say and the high temperature-resistant breeding line in step S1as parents; S3, backcrossing of the high temperature-resistant breeding line used as a male parent and the hybridizaiton progeny obtained in step S2, used as a female parent, to obtain a backcrossed progeny; and S4, continuous population self-crossing purification breeding of the backcrossed progeny, obtained in step S3 and used as the parent, with amaranthine shell color and shell height as breeding indexes to obtain the high temperature-resistant amaranthine hybrid seed. The method utilizes the hybridization and backcrossing processes to genetically improve the scallop Bohai Sea Red and A.i.concentricus Say, so the obtained hybrid scallop has the advantages of large size, high growth speed and good high temperature resistance.

Description

technical field [0001] The invention belongs to the technical field of shellfish breeding, and in particular relates to a method for cultivating purple-red heat-resistant hybrid seedlings. Background technique [0002] Gulf of Mexico scallop (A.i. concentricus Say) is a scallop species introduced from the United States in the North Gulf in the 1990s. After 20 years of inbreeding, there have been obvious problems of germplasm decline. The main manifestations are: small individuals, small fleshy pillars, short life span (6-8 months), and the shell color is black on one side and white on the other. Muscles are sold, shells are discarded directly, the added value of the product is low, and the production enthusiasm of farmers declines. It has seriously affected the economic benefits of the industry and has become a "bottleneck" for the healthy development of the industry. Therefore, it has become a top priority to introduce new germplasm, improve old varieties, cultivate new va...

AI Technical Summary

Problems solved by technology

As an excellent new species of scallop "Bohai Red", the breeding range is only in Liaoning, Shandong and other Bohai Bays. It cannot be cultivated in large areas of southern waters such as Fujian, Guangdong, and Guangxi, which is not conducive to the excellent species of scallop "Bohai Red". Make full use of quality resources