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Molecular biotechnology has made major breakthroughs in forestry Hebei Yucheng transgenic insect-resistant poplar
China's molecular biotechnology has made a major breakthrough in forestry. Professor Zheng Junbao of Hebei Agricultural University has developed a binary insect-resistant gene 741 poplar. This major achievement was recently awarded the second prize for national technology invention. Poplar is one of the important tree species in China's plain afforestation and fast-growing high-yield forest project. However, the plague of pests has caused great damage to the growth of poplars. For half a century, only chemical pesticides have been used to prevent and control worms. Although there are certain effects, the long-term use of chemical pesticides in large quantities will lead to pest resistance and the cost of prevention and control will increase. At the same time, overdose of pesticides will kill. Natural enemies of pests destroy the ecological balance of nature and directly endanger the safety of humans and livestock. Prof. Zheng led the research team members for 8 years to tackle the genetic transformation, indoor and experimental feeding trials, and obtained a good poplar hybrid with a transgene resistant gene and an abortive female strain resistant to infection 741. Yang. Its greatest advantage is its resistance to major insect pests of the lepidopteran species, including the 4th and 6th generation of the annual C. sinensis moth, the worldwide quarantine pest H. cunea, and the gypsy moth, as well as the young moths and archaea. This method saves a lot of manpower and material resources, reduces environmental pollution, and has significant economic and social benefits. The insect-resistant 741 poplar is a good tree species suitable for the Huang-Huai-Hai Plain, and its two crosses are all native trees in China, and have strong resistance to stress and optimal wood quality. After indoor tests, intermediate tests, and environmental releases, it was approved for commercial production on December 12, 2002, and nursery bases were established in 9 suitable sites including Beijing, Tianjin, Hebei, Shandong, Henan, Shaanxi, etc. 10,000 plants. Heze City, Shandong Province, intends to build 2 million mu of fast-growing and high-yield forest through agroforestry mode. It is planned to be completed in 10 years and has now been planted with 20,000 mu.