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According to the China Lunar Exploration Project, after 22 days of flight at 9:29 PM,A 40-gram batch of “Hangju Xiangsi Miao” rice seed landed safely with the returner at 1:59 AM on December 17, marking the first time that China’s aerospace rice cultivation completed a mutagenesis experiment in deep space. It is a milestone. The meaning of the formula.
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On December 28, the South China Agricultural University held a media meeting,Some of these rice seeds, which only returned to Guangzhou after space travel, have sprouted!
All the seeds in Chang’e 5 have been arranged to germinate
Prior to this, the National Aerospace Plant Improvement Engineering Technology Research Center had participated in aerospace improvement many times. In May this year, the Long March 5B carrier rocket launched a new generation of manned test spacecraft for the first time. The flight test was a complete success. The center took the lead in collecting 31 copies of rice, sweet corn and Chinese medicine. The transported samples amounted to 988 grams. Quality is the past. Two or three times.
So what are the similarities and differences between the deep space mutagenesis experiment carried out this time and the past space replica?
Guo Tao, deputy director of the National Aerospace Plant Development Engineering Technology Research Center, said the earlier aerospace replica was mainly based on returnable satellites and spacecraft, which were transported in low-Earth orbit and had a short space flight time. .“The rice seeds transported this time have been flying for almost 23 days. They have been exposed to the unique and extreme effects of radiation from deep space in the near orbit of the moon, encountered the Van Allen radiation belt and sunspots broke out. Long-distance space travel and the space environment It’s complicated, it’s impossible to meet. “
Guo Tao said this deep space mutagenesis experiment is expected to help humans gain a deeper understanding of the molecular and genetic mechanisms of how rice responds to the deep space environment, and provide theoretical support to explore the origin. of life, the evolution of species and aerospace biosafety; obtaining a batch of important The value of excellent new genes and the formation of a complete technology system of utilization of key genes for the selection and improvement of rice varieties; Select a batch of new high-yield, high-quality, multi-resistant and green rice varieties to meet the needs of diversified industries through cooperation between industry, university and research. Promote applications to improve China’s food safety level.
“This time, the deep space mutagenesis experiment carried out on a Chinese aircraft is 100% original from China and will surely produce a host of original scientific and technological achievements,” believes Chen Zhiqiang, former vice president of Huanong and director of the National Research Center for Aerospace Plant Improvement Engineering Technology. The mutagenic material from deep space carried by Chang’e-5 this time is not the result of a country or a school. It must rise to the height of serving the world and all humanity.
Chen Zhiqiang further expressed that he hopes to take this opportunity to conduct systematic research on mutations in deep space.Planning and design includes the entire chain of scientific research, from basic research to basic applied research, and then applied research; create, discover and excavate a batch of good genes and mutants, grow a batch of new high-quality varieties, and serve the national food production.
Chang’e 5 Phase III lunar exploration project Carrying certificate and carrying seeds
