December 17, 2022 14:00 Last updated: 14:37
On December 14, the Korean media Hankyoreh News published a review article titled “From the space station to the moon, the reason why China is vigorously developing ‘space rice'”.
The article mentioned that in late October, China’s “space rice” brought back from Shenzhou 12 was harvested in the experimental field of the scientific research and demonstration base in Wuhan, Hubei Province, and China led to a breakthrough in space breeding .
The so-called “space breeding” refers to bringing seeds into space, exposing them to high-energy particle radiation in the universe and the microgravity environment, in order to emit genetic mutations and acquire new characteristics. The seeds obtained from “space breeding” must go through several years or even several generations of breeding to stabilize the excellent characteristics.
China has set a national goal of ensuring food security to feed 1.4 billion people. Although space breeding first appeared in the 1960s, when the United States and the Soviet Union hoped to achieve food self-sufficiency for astronauts through experiments, China was more interested in applying related technologies to crop types including staple foods.
Since 1987, China has used satellites, manned spacecraft and high-altitude balloons for breeding crops in space. Since then, the country has cultivated a total of thousands of seeds of space plants and fruits, including about 200 new varieties of rice, wheat, corn, soybean, cotton, tomato, etc. that have been approved. As of 2018, China has approved 2.4 million hectares of space-breeding crops.
“Luyuan 502” wheat, which has the second largest planted area in China, is considered to be the most successful example in the history of space breeding in China. Its yield is about 11% higher than the yield of common varieties, and it is also resistant . to drought and pests.
Since the beginning of this century, China’s space breeding experiments have become more active. The space breeding satellite launched in 2006 sent 152 species into low Earth orbit for 15 days. In April this year, after six months of space breeding experiments in Tiangong, the Shenzhou 13 astronauts returned with 12,000 seeds of grass, oats, alfalfa and mushrooms.
China is even conducting space breeding on the moon. China’s Chang’e-5 made a 23-day round trip to the moon between November and December 2020, loaded with various plant seeds, including 40 grams of rice seeds .
On the 4th of this month, the Shenzhou 14 astronauts who returned from the Tiangong Space Station brought rice seeds that had been planted in space for 4 months ago. CCTV photos.
The article noted that China is challenging space breeding other than space breeding. On the 4th of this month, the Shenzhou 14 astronauts who returned from the Tiangong Space Station brought rice seeds that had been planted in space for 4 months ago. The significance of this experiment lies in the fact that the entire life cycle of growing rice has been completed in orbit for the first time. Recently, China has completed the establishment of the Tiangong space station, and it is expected that more space breeding and growing experiments will be carried out stably in Tiangong in the future.
In fact, rice is an important ration for the Chinese people In order to achieve basic self-sufficiency in food and ensure that food security is inseparable from the guarantee of rice production. Rice promoted by Chinese scientific research has become the Chinese solution to the food crisis in countries which is developing.
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