I built an industrialized cotton transgenic technology system
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China's GM cotton research has achieved major breakthroughs. According to news from the Ministry of Science and Technology on December 8, scientists and technicians have established a highly efficient, factory-based cotton genetically modified technology system, and assembled a variety of genetically modified technologies to achieve assembly line operations, with an annual output of more than 6,000 transgenic cottons. The cotton genetically modified operating costs. Experts believe that this achievement has reached the international advanced level. The team led by Dr. Yu Shuxun, the chief scientist of the National High-Tech Agriculture Theme and the head of the Cotton Research Institute of the Chinese Academy of Agricultural Sciences, has transferred genes such as insect resistance, disease resistance and improved fiber quality through the optimization of industrialized transgenic technology systems. To more than 20 major cotton varieties, Agrobacterium-mediated genetic transformation cycle was shortened to 6 months. Dr. Yu said that the efficiency of this transgene has been significantly improved compared to published methods. This technical achievement was completed with the support of the Ministry of Science and Technology, the Ministry of Agriculture, and Henan Province. At present, it has directly cultivated eight new transgenic cotton varieties with independent intellectual property rights and established a rapid gene function verification system. Each year, more than 20 functional genes can be verified. Scientists said that through the optimization of this technical system, the range of genotypes of receptors has been broadened. A rapid screening system for transgenic cotton materials was established, and 621 transgenic cotton germplasm materials were obtained, providing germplasm materials with specific genetic backgrounds for molecular breeding of cotton, and laid the foundation for the construction of mutant libraries. In addition, scientific and technical personnel also successfully applied plant grafting technology to the rapid transplanting of transgenic cotton. The survival rate of the transgenic cotton reached more than 90%, effectively solving the problem of low survival rate of transplanted cotton seedlings. In 1998, China planted 3.8 million mu of genetically modified insect-resistant cotton, of which 95% were foreign insect-resistant cotton, and domestic anti-insect cotton accounted for only 5%. This year, the area of ​​planting transgenic insect-resistant cotton has reached more than 4,600,000 mu, and the cultivated area of ​​domestically produced transgenic insect-resistant cotton has reached about 70%, of which Hebei, Shandong, Henan, and Anhui provinces have achieved 100% planting. At present, the planting area of ​​domestically produced transgenic insect-resistant cotton has reached more than 7,000 million mu, with an average increase of 140 yuan to 160 yuan per mu, which has increased cotton farmers' income by more than 10 billion yuan.