Zhu Dengyun, a postdoctoral fellow in Jinhua, Zhejiang Province, after 7 years of painstaking research, transferred a gene from potato pollen to corn. As a result, lysine and protein were increased by 30% and 90% respectively compared to conventional corn, and they have overcome problems that have not been overcome internationally. . Zhu Dengyun's 10 transgenic corn varieties were planted on the Jinhua Vocational and Technical College's School of Bioengineering and were recently harvested. According to the Department of Plant Engineering and Associate Professor Hu Shenghuo at the scene of field trial production, the YC combination is equivalent to 508.6 kilograms per mu, which is more than 400.7 kilograms per kilogram of the Danyu 13 (Jinhua main planted high-yielding species) yield, which is 27.1% of the total growing period of 88 days. . They also conducted comparative studies of varieties and matching cultivation techniques to select combinations suitable for Jinhua cultivation. The reporter telephoned Zhu Dengyun, who has been working at the Biological College of China Agricultural University. He is the leader of the National Research Group for the selection of high-protein, high-lysine transgenic maize inbred lines and cross combinations. Zhu Dengyun told reporters that under the National High-Tech Research and Development Program and National Special Funding for Genetic Research and Industrialization, the research group used genetic engineering methods, and also used transgenic inbred lines and conventional inbred lines to prepare a large number of cross combinations to screen out comprehensive agronomy. Eighteen hybrid combinations such as YC, Y642 and Y419 with excellent traits. This is the first time in the world that genetically engineered transgenic high-quality maize inbred lines have been bred. The environmental release test in the safety evaluation system has now been completed. Zhu Dengyun said that the high lysine protein gene isolated from the research group and the transgenic technology system of high-protein, high-lysine-quality corn have been applied for national invention patents. The subject passed the appraisal of the expert group composed of Chinese Academy of Sciences, Peking University, and Chinese Academy of Agricultural Sciences on January 8 this year and was considered to have reached the international advanced level. At the same time, it is believed that this technical achievement has formed a reserve of technology and products, with potentially huge economic and social benefits. Maize is a high-yielding food crop. China has planted more than 300 million mu of corn. However, corn's nutritional quality is relatively poor, protein, lysine content is low, corn lysine content accounts for only 0.27% of the dry weight of the seed, the protein accounts for only 8% of the seed dry weight. Therefore, high-quality lysine and other feed additives must be added to the compounded feed to meet the needs of livestock and poultry growth and development. If the GM corn is used to process feed, it only needs to add some minerals, which can reduce the cost by 30% per ton. Since the early 1960s, American scientists have been studying and hope to increase the lysine content in corn seeds through conventional breeding methods. However, this world problem has not yet been solved.