Sweet corn is the product of traditional breeding technology and has nothing to do with transgenic technology. Of course, transgenic sweet corn with enhanced insect resistance and herbicide resistance does exist, but it has not been approved for planting in China. At present, the sweet corn we bought in China is unlikely to be genetically modified sweet corn.
The earliest sweet corn recorded in the literature is Bapon corn collected by European colonists from Iroquois in America in 1779. Based on this, we can be sure that sweet corn appeared earlier, and there was no such thing as genetic modification at that time.
Although the current sweet corn varieties are not exactly the same as those hundreds of years ago, they are not genetically modified products. They are new sweet corn varieties cultivated by traditional breeding techniques, that is, breeding inbred lines and hybrid combinations.
Although sweet corn is the product of traditional breeding technology, the introduction of insect resistance and herbicide resistance through transgenic technology can improve the adaptability of sweet corn in the field, thus increasing the yield of sweet corn.
Reduce the harm of spraying pesticides to the environment and reduce the labor intensity of farmers' field management. The sweet corn cultivated in this way also becomes "transgenic sweet corn", although its sweet character has nothing to do with transgenic technology.
Extended data:
Transgenic corn in China;
The management of genetically modified crops in China is strict, and the promotion and application of genetically modified crops are also strict. First, it must undergo a safety assessment, which takes several years. For crops, after the safety evaluation period, it is necessary to examine and approve the varieties.
Therefore, for a genetically modified variety, it takes a long time from the beginning of "transformation" to "popularization", and as far as we know, for some varieties and crops, China has never engaged in the process of genetically modified safety evaluation, especially those products that people eat directly from their mouths, which basically means that it is impossible for the country to organize safety evaluation and popularization and application in a short time.
At present, the main varieties of transgenic corn are insect-resistant transgenic corn and glyphosate-resistant transgenic corn. The planting rate of genetically modified corn in the United States, Brazil, Argentina, Canada and Uruguay is close to or over 90%. Among them, 25% of genetically modified corn grown in the United States is used for export, and the rest is used for domestic ethanol production and consumption.
By the end of 20 13, 12 and 19, inspection and quarantine institutions at ports such as Shenzhen, Fujian, Shandong, Guangdong, Zhejiang and Xiamen have successively detected MIR 162 genetically modified components from 12 batches of 545,000 tons of American corn exported to China. Inspection and quarantine institutions at various ports have returned 545,000 tons of corn imported from the United States 12 batches to China according to law.
Baidu encyclopedia-sweet corn
Baidu Encyclopedia-Transgenic Corn