On December 20, the opening ceremony of the Third China Aquatic Seed Industry Exposition and the Fourth Guangdong Aquatic Seed Industry Conference was held in Guangzhou, and the award ceremony of the first special award for aquatic seed industry in China, "Zhonglin Aquatic Seed Industry Science and Technology Award", was held at the same time. The achievements led by the Pearl River Fisheries Research Institute, "the cultivation, promotion and application of new varieties of largemouth black bass' Youwei No.3 '", "the creation, application and promotion of new varieties of snakehead", "the creation and promotion of new varieties of Chinese soft shelled turtle' Zhushui No.1 'and the promotion of supporting aquaculture technologies", won the first Zhonglin Prize for Science and Technology in Aquatic Seed Industry.
The system of "Breeding and Popularization and Application of Large mouth Bass' You Perch No. 3 'New Variety" completed by Li Shengjie's research team developed 23 gene markers related to domestication, growth and other traits, and established the polymerization breeding technology of gene markers related to growth traits; By using selective breeding technology and molecular marker technology, a new fast growing largemouth bass "Youwei 3", which is easy to tame artificial formula feed, was bred. Its growth speed was 17.1% higher than that of "Youwei 1" on average, and the success rate of domestication was 10.3% higher than that of "Youwei 1" on average; The "three excellent" breeding mode of largemouth bass was established, with no water change during the whole breeding process and the risk of disease occurrence greatly reduced, significantly improving the economic benefits of breeding. Innovate and establish an integrated promotion system of "breeding and promotion" for franchise of improved varieties, establish 12 large-scale breeding bases, produce 5 billion fry of "Youwei No.3" every year, and promote and apply them in 27 provinces, with a cumulative promotion area of 240000 mu in recent three years.
The "Creation, Application and Promotion of New Varieties of Channa argus" completed by Chen Kunci's research team aimed at the industrial problems that growth, fitness and male female differences affect production efficiency. The breeding of Channa argus and Channa argus was carried out, and the hybrid breeding of Channa argus increased the growth rate by 20.1%, had strong cold resistance and disease resistance, and fed with mixed feed (GS-02-002-2014); Breaking through the gender control technology, we created a new breed of super male Channa argus by using molecular identification and reproductive endocrine regulation, and bred a hybrid Channa argus "male No. 1" (GS-02-003-2022) with a male rate of more than 93%, a growth rate of 26.2%, a feed input reduction of 8-20%, and a benefit increase of more than 40%. Establish efficient breeding and healthy breeding technology, increase fertilization, hatching and seedling cultivation by 36%, 28% and 30% respectively, establish three breeding bases, and support the characteristic industry of raw fish in Sanjiao Town and the provincial modern agricultural industrial park of raw fish. During 2017-2021, 15.56 billion fry and 2.17 billion fish species were produced, with an output value of 1.637 billion yuan, 326000 mu of breeding was promoted, and the new output value was 14.549 billion yuan.
The "New Variety Creation and Supporting Breeding Technology Promotion of Chinese Soft shelled Turtle 'Zhushui No. 1'", completed by Zhu Xinping's research team, takes the Dongting River wild Chinese soft shelled turtle as the basic group, takes the growth rate as the target character, and is bred through five generations of population breeding. The average growth rate is increased by 12.3%, and the skirt width is increased by more than 5%. The innovative achievements of the project are as follows: 1. It is the first turtle new variety approved by the state in Guangdong Province, filling the gap in the province and at the domestic leading level; 2. Prove the characteristics of the germplasm resources of 6 strains of Chinese soft shelled turtle, and complete the revision of the current national standard of Chinese soft shelled turtle; 3. By deeply analyzing the genome of Trionyx sinensis, we screened a number of molecular markers that were significantly associated with economic traits such as growth, sex, stress resistance, etc; 4. Invent the media free incubation mode and optimize the production process; 5. Build an efficient and healthy breeding technology model to effectively promote good varieties and methods. In the past five years, 38600 mu has been promoted accumulatively, with an increased output value of more than 1 billion yuan. The economic and social benefits are significant, which has made important contributions to the development of the aquaculture seed industry and rural revitalization.
In addition, on the occasion of the conference, Guangdong Agricultural Technology Popularization Center and the Southern Rural Newspaper jointly launched the selection activity of "Guangdong Aquatic Seed Industry in the Past Decade", and Bai Junjie, Zhu Xinping and Chen Kunci, researchers from PRFRI, were selected as "Top Ten Breeding Experts".
