Dalian Evening News reporter Dai Wei intern Liu Xiaoshuo Suddenly, genetically modified foods have become a heart disease for people. Recently, a number of websites have published special topics to render GM foods flooding in China. For a time, things such as potatoes, cherry tomatoes, corn, and carrots that were often on the table were cast in the shadow of genetically modified genes. Some sites also “bundled†ways to identify genetically modified genes. Yesterday, the reporter interviewed experts from the Dalian Academy of Agricultural Sciences. Experts said that apart from papayas, there are very few directly imported food products that are genetically modified. However, those methods passed by the Internet are not reliable. Cherry tomatoes sweet corn Not genetically modified According to the online statement, those very sweet corn, neat carrots, bare potatoes, and even cherry tomatoes are genetically modified products. In this regard, Director Wu Chunhua of the Institute of Biotechnology of the Municipal Academy of Agricultural Sciences stated that these are not genetically modified foods but new varieties that have been cultivated. According to Director Wu, the number of genetically modified foods in the Chinese market is currently very low. China's own genetically modified plants include cotton, papaya, poplar, and petunias, among which the main transgenic crops grown are genetically modified cotton. The purpose of cultivating transgenic cotton is to enhance the resistance of cotton plants and increase yield. According to relevant statistics, China's GM cotton planting area accounts for two-thirds of the country's total cotton planting area. Imported genetically modified crops include soybeans, corn, rapeseed (seeds), etc. Imported genetically modified soybeans, genetically modified rapeseed are used to extract oil, and genetically modified corn is used to make animal feed. Therefore, there are only three kinds of genetically modified foods that are currently available on the domestic market: soybean products such as soybean oil, rapeseed oil, and papaya. Peanut oil and sunflower oil are not GM foods. According to Director Wu, there are very few genetically modified foods that can be directly imported and consumed. Other transgenic plants are not sold directly on the food market. As for papaya, at present, the country has only approved the cultivation of genetically modified varieties in Guangdong. According to the relevant person in charge of the Guangzhou Academy of Agricultural Sciences, 95% of papayas in the local market are genetically modified products. However, papayas produced outside Guangdong are not GM varieties. Dalian Cherry All are selected by traditional methods Unlike other biotechnologies, there are still disputes over whether genetic transformation is good or bad. In the domestic agricultural science community, even divided into two distinct groups, either security or cutting. The so-called transgene refers to the use of scientific means to extract the genes needed from an organism, transfer it to another organism, recombine with the genes of another organism, and then conduct artificial generations from the results. Breeding to obtain a specific material with an inherited genetic trait. Unlike hybridization, this technology can use transgenic technology to create new chromosomes, change animal and plant traits, and breed new varieties, with greater randomness and uncertainty. This technical feature is also easy to cause illusions. Are those fresh and different species from the past all genetically modified? “Under normal circumstances, whether a genetically modified species can be commercialized or not, it will take 10 to 20 years for commodities to enter the market.†Director Wu told reporters, “From the research cycle point of view, it is used with traditional methods of selective breeding. The time is almost the same.The purpose is to improve varieties, improve disease resistance, increase yield, or improve the taste.But it cannot be concluded that products that are obviously different from those of the past are necessarily the result of genetic transformation. Take Dalian's cherry It is said that Dalian Cherry is leading the country in variety cultivation. We have cultivated many early-maturing and high-yielding new varieties, but these new varieties have been cultivated through traditional methods of seed selection and breeding." For corn, net-sweet corn is a genetically modified product. In fact, in 1968, Beijing Agricultural University, now China Agricultural University, for the first time bred "Beijing Sugar" sweet corn varieties, and after so many years of introduction, breeding, it has formed so many varieties of sweet corn. Glossary The so-called transgene refers to the use of scientific means to extract the genes needed from an organism, transfer it to another organism, recombine with the genes of another organism, and then conduct artificial generations from the results. Breeding to obtain a specific material with an inherited genetic trait. The advantages and disadvantages of genetically modified foods Advantages: It can increase crop yields; It can reduce production costs; It can enhance the ability of crops to resist pests, viruses, etc.; Improve the storage of agricultural products; Shorten the time of crop development; Get rid of the four seasons supply; Break the boundaries of species, and constantly cultivate new species, production Foods that are good for human health. Disadvantages: The so-called increase in production is based on circumstances that are not affected by the environment. If there is a natural disaster caused by rain or snow, it may also result in a more severe reduction in production. A number of studies have shown that genetically modified foods damage mammalian immune function. Web authentication methods do not fly Many methods have been circulated on the Internet to identify whether they are genetically modified. For example, most of the anti-seasonal genes are genetically modified; the colors and sizes are different from those of traditional varieties, such as transgenes. According to Director Wu, these so-called authentication methods basically lack scientific basis and do not fly. According to the Internet, 95% of papayas in the market are genetically modified. In fact, currently there are only genetically modified varieties of papaya produced in Guangdong. Net transmission, non-genetically modified carrot surface is uneven, generally not straight, from beginning to end from coarse to fine, generally listed in autumn and winter; genetically modified carrot surface is relatively smooth, generally straight, and sometimes the tail is generally thicker than the middle, Generally listed in summer. In fact, many of the carrots grown in China are hybrids, such as the Jinghong 5 inch and Xiyou 5 inch varieties. They are all produced in summer and their appearance is the same as that of the genetically modified carrots described online. However, in reality, these are all Hybrid varieties. In fact, the reason for the discoloration of potato slices is that the starch contained in potatoes is oxidized by air, and the color change with high starch content is naturally larger. Precocious potatoes, which are widely grown in Fujian Province, are bred by Northeastern University. The phenotype is the same as that of the genetically modified potatoes described online, and its starch content is indeed lower than that of late-ripe potatoes in Northeast China. But in fact, it is also a real hybrid. Net transmission, non-genetically modified potato skin deeper, pitted, cut, the cut will quickly turn black; while the transgenic potato surface is smooth, cut, the cut surface color change is not. According to experts, using these methods to identify genetically modified species is not reliable. At present, the only thing consumers can rely on is the “Measures for Sanitary Management of Genetically Modified Foods,†promulgated by the Ministry of Health. This stipulates that if a food product contains genetically modified ingredients, it must be labeled “Transgenic Markers†on the packaging. Upron Bathtub Upron Bathtub Guangzhou Aijingsi Sanitary Products Co.,Ltd , https://www.comoxvalleyhottubs.com