On August 30, the second Guangdong agricultural science and technology innovation competition - "Haida Cup" Guangdong seed industry science and technology innovation competition finals, CO sponsored by Guangdong Provincial Department of agriculture and rural areas and Guangzhou Tianhe District People's government and hosted by Guangzhou agricultural science and technology innovation center, was held in Guangzhou National Agricultural Science and technology innovation center. After three rounds of strict selection in the early stage, a total of 8 projects were shortlisted for the finals. Among them, the project of "new variety and promotion and application of big mouth bass youperch No. 3" jointly completed by Pearl River Fisheries Research Institute and Guangdong Liangshi Aquatic Seed Industry Co., Ltd. was successfully selected and won the award of "excellent project".
The large mouth black bass "youperch No. 3" takes "youperch No. 1" and the introduced population of northern subspecies as the breeding basic population, and uses conventional breeding and molecular marker assisted technology to breed the breeding species with strong feed utilization ability through successive generations. Its growth rate is 33.9% - 38.8% higher than that of the introduced population, the success rate of domestication is 30.6%, the growth uniformity among individuals is high, and the body shape is slender, In terms of breeding, it solves the problem of "neck sticking" that the breeding industry completely depends on live fish and ice fresh young miscellaneous fish. The project team established the franchise mode of "youperch 3", broke through the off-season breeding technology and industrialized seedling raising technology, created an ecological and efficient breeding mode, constructed an integrated promotion system of improved seed breeding and promotion, and promoted industrial transformation and upgrading and green development. In recent three years, 12 billion improved varieties and seedlings have been promoted, more than 300 million off-season fish fry and more than 100 million standard seedlings have been provided annually, which has produced remarkable economic and social benefits. Big mouth bass "youperch No. 3" has been listed as the main aquaculture variety in Guangdong Province for three consecutive years. It is also the main variety in the action plan for improving the quality of aquatic seed industry in main production areas such as Zhejiang, Jiangsu, Hubei, Sichuan, Henan and Tianjin. Its popularization and Application has promoted the rapid development of aquaculture industry and will play an exemplary role in fighting a turnaround in seed industry and driving rural revitalization.
