From the press conference organized by the Chinese Academy of Agricultural Sciences, the Executive Expert Group on the Breeding of Major Special Cotton Projects for New Varieties of Genetically Modified Organisms was informed that under the strong support of major GM projects, China’s second-generation GM cotton research has leapt to the world’s leading level and possessed The independent intellectual property rights such as international invention patents have laid a solid foundation in order to get rid of the long-term dependency of high-end cotton on imports. This is another landmark scientific and technological achievement that has been achieved in this high-tech field following China’s transformation of insect-resistant cotton. Li Jiayang, deputy director of the Ministry of Agriculture, dean of the Chinese Academy of Agricultural Sciences and member of the Chinese Academy of Sciences, said that the low pest, disease, and fiber quality are two chronic problems that have plagued China's cotton industry for a long time. In the 1990s, Chinese scientists jointly tackled the problem and developed the first generation of transgenic cotton with independent intellectual property rights—transgenic Bt cotton, successfully resisting the harm of bollworm, thus making the domestic market share of transgenic insect-resistant cotton. From the initial 5% to more than 95%. For more than 10 years, the domestically produced transgenic insect-resistant cotton has achieved remarkable achievements in the prevention of the outbreak damage of bollworm, the reduction of the use of pesticides, and the saving of production costs, bringing about enormous social and economic benefits. So far, the transgenic insect-resistant cotton is still the largest transgenic crop planted in China in terms of commercialization. At present, the full coverage of transgenic insect-resistant cotton has basically been realized in the cotton regions of the Yangtze River Valley and the cotton regions of the Yellow River Basin. It turns out that cotton transgenic research must go ahead of production. Academician Li Jiayang said that the second generation of genetically modified technologies, which are mainly aimed at improving fiber quality, increasing crop yield, and enhancing stress resistance, have become a hot topic in the world's scientific research field in recent years. With the support of major special projects for the cultivation of new varieties of genetically modified organisms, Chinese Academy of Agricultural Sciences, the Institute of Cotton Research, Peking University, Fudan University, Southwest University, and other well-known scientific research institutes and universities have united and cooperated to give full play to China's first-generation GM cotton research. The accumulated experience and technology, and joint research, finally achieved a major breakthrough in the cultivation of genetically modified high-quality fiber varieties and material creation. Among them, the “China Cotton Institute 70†selected by the cotton research of the Chinese Academy of Agricultural Sciences, was developed by using the high-quality introgression system of sea-island cotton and the transgenic cross-resistance cotton line and molecular polymerization technology. The fiber length of this cotton material is 32.5 mm. Achieve high quality cotton standards. The high-quality large bell-to-RRM gene cotton germplasm new material, jointly developed by the Cotton Research Institute of the Chinese Academy of Agricultural Sciences and Fudan University, has a boll weight of 7.5 grams, which is significantly higher than that of normal cotton varieties, and its boll-increasing performance is higher than that of general cotton varieties. More than %; average fiber length is 33.5mm, which is about 3mm longer than that of normal cotton varieties, and has great application potential in the cultivation of high-yield and high-quality varieties. The high-leaving transgenic cotton germplasm new material completed by Southwest University has significantly increased lint yield. The lint percentage (ie, the proportion of lint that accounts for seed cotton) is as high as 50.7%, which is 10% higher than that of normal cotton varieties. At the same time, the fiber fineness is significantly improved, so that the cotton yield and quality are improved synchronously. The new material of high-quality fiber transgenic cotton germplasm, which was jointly developed by Peking University and the Cotton Research Institute of the Chinese Academy of Agricultural Sciences, has significantly increased fiber strength. The above genetically modified materials are undergoing safety evaluation procedures. According to Yu Shuxun, director of the Cotton Research Institute of the Chinese Academy of Agricultural Sciences and an academician of the Chinese Academy of Engineering, cotton is the main cash crop and raw material for the textile industry in China. It is an important economic source for more than 100 million cotton farmers, and it also involves the employment of 19 million textile workers. During the "Eleventh Five-Year Plan" period, China's cotton textile and apparel exports reached more than 870 billion U.S. dollars, with an average annual export of 177.8 billion U.S. dollars, accounting for 40% of the global export volume of textiles and garments. In 2011, exports exceeded 210 billion U.S. dollars, an increase of more than 20 billion U.S. dollars over the same period of the previous year. , an increase of 10.7%. Yu Shuxun emphasized that while seeing achievements, it should also be soberly noticed that China's raw cotton “gap†has increased year by year, which has increased from 12% in 2002 to 40% in 2011. Not only that, the inherent quality of China's cotton fiber is relatively poor, the vast majority can only be suitable for spinning 32 yarns, and the high quality raw cotton that is suitable for spinning more than 60 high count yarns is heavily dependent on imports, which has become a major bottleneck restricting the upgrading of China's cotton textiles. . Yu Shu calculated a sum of money. If our country's cotton can be increased from the current spinning 32 yarns to the 60 spinning yarns, the grades of cotton yarns and processed products will be improved, and the price will increase by about 50%. It is of great significance to comprehensively enhance the international competitiveness of China's cotton industry chain. At the same time, the production methods of higher quality and better prices will increase the income of cotton farmers, and will completely get rid of the passive situation in which China's high-end cotton imports rely on imports for a long time.
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*Dimension Tolerance +0.0 - -0.1mm
*Center Thickness +/-0.1mm
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*Surface Quality:60/40
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*Chamfer 0.25mm at 45 degree typical
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