China's GM cotton research has made a major breakthrough in the emergence of new varieties of insect-resistant cotton
The high-tech project "Cotton factory-based transgenic technology system" undertaken by the Cotton Research Institute of the Chinese Academy of Agricultural Sciences, etc., has recently passed expert appraisal. With this technical system as a support, 8 new varieties of transgenic cotton have been directly bred, and more than 32 million mu of transgenic cotton has been promoted. According to the "People's Daily" report, China's transgenic crops are dominated by transgenic insect-resistant cotton. In the face of fierce international competition, China's transgenic cotton research and industrialization has achieved a series of major breakthroughs with the support of the state and has produced a batch of transgenic insect-resistant cotton. New varieties, and access to independent intellectual property rights. The Institute of Cotton Research of the Chinese Academy of Agricultural Sciences carried out a research on the “cotton factory-based transgenic technology systemâ€. Through years of efforts, it has established a highly efficient, factory-based cotton genetically modified technology system, and has an annual output of more than 6,000 transgenic cottons, effectively reducing cotton genetically modified plants. cost. Through optimization of transgenic technology systems, genes such as insect resistance, disease resistance, and fiber quality improvement have also been transferred to more than 20 major cotton varieties. In addition, they have also successfully applied plant grafting technology to the rapid transplantation of transgenic cotton. The survival rate reached more than 90%, which effectively solved the problem of low survival rate of cotton transgenic seedlings transplanted. Experts believe that this achievement is at the leading level of domestic similar research and has reached the international advanced level. Driven by this technology, the planting area of ​​transgenic insect-resistant cotton in China has rapidly expanded. Dr. Yu Shuxun, head of the Cotton Research Institute of the Chinese Academy of Agricultural Sciences, said: In 1998, China planted 3.8 million mu of transgenic insect-resistant cotton, of which 95% were foreign insect-resistant cotton and domestic insect-resistant cotton accounted for only about 5%. In 2004, the planting area of ​​transgenic insect-resistant cotton was over 4600 million mu, and the cultivated area of ​​domestically-established transgenic insect-resistant cotton reached about 70%, of which Hebei, Shandong, Henan and Anhui provinces achieved 100% planting. At present, the growing 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.
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