1, look at the avatar
First of all, it can be distinguished from the head. If the corn is too big and the yield is high, most of it is genetically modified corn. Ordinary corn is very small, and corn grains vary in size.
2. Look at this color
Secondly, it can be distinguished by color. Ordinary corn is more uniform in color. If it is colored corn, friends need to be cautious. Purple, white and yellow corn kernels are mostly genetically modified corn.
Step 3 look at the season
Pay attention to the corn production season. If it is out of season, most of them are genetically modified corn, and ordinary corn has a fixed harvest time. Generally in May and every year 10.
Step 4 look at pests
For reference from the point of view of pests. Most pests like to patronize ordinary corn, while transgenic corn is rarely attacked by pests.
Transgenic corn is a kind of corn with stable genetic traits that people pursue by introducing the genes of distant and useful plants into the corn genetic material that needs to be improved by using modern molecular biotechnology. Transgenic technology is the core technology to produce transgenic corn. It uses DNA recombination technology to transfer foreign genes into recipient organisms, making them undergo directional and stable genetic changes, even if new recipient organisms acquire new traits.
Since the advent of transgenic corn, although some of its improved characters can meet people's requirements, its safety is still controversial. Scientists and governments around the world also hold different attitudes towards genetically modified corn.
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.