Shaanxi's oligosaccharides prevent wheat disease from a breakthrough

Through field trials, it was initially demonstrated that oligosaccharides extracted from silkworms can induce disease resistance in wheat and thus prevent stripe rust. This research, led by Academician Li Zhenrong, a professor at the Chinese Academy of Engineering and professor at Northwest A&F University, has achieved a breakthrough recently. Stripe rust is one of the most serious diseases of wheat. After the infection, the lighter ones have reduced their production and the heavy ones have lost their grain. In more than half a century, there have been 9 rounds of stripe rust epidemics in our country, and the most serious one-time reduction of wheat output in China has reached 6 billion kilograms (for two years in Shaanxi province). At present, the main means of controlling stripe rust is chemical pesticides. The disadvantages of chemical pesticides are harmful to humans, animals and the environment, and they are prone to drug resistance and waste a lot of resources. Therefore, the development and development of biological pesticides for the prevention and control of stripe rust are of great significance to China's food security, environmental safety, and human and animal security. Studies have found that oligosaccharides can effectively induce plants to produce defense responses, activate plants to obtain immune responses, and thus resist disease, just as people give drugs that increase immunity. Since 2002, under the auspices of Academician Li Zhenrong, researchers have initially demonstrated that the oligosaccharides extracted from the silkworm can induce disease resistance and induce disease in wheat through the extraction technology of oligosaccharides, indoor induced effects and field plot experiments. The anti-effect reached about 80%, and the general biological agent induced effect was about 60%. Next, they will conduct further research on the field effect of oligosaccharides and the blending technology with other pesticides. If successful, a new biopesticide is expected to be born in Shaanxi.

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