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China's space station sky capsule experiment is progressing smoothly, and plants have sprouted and grown

Posting time:2022-12-06 01:23:26

China's space station sky capsule experiment is progressing smoothly, and plants have sprouted and grown

IT House reported on August 29 that at present, the Shenzhou 14 astronaut crew has been working and living in orbit for nearly three months. All work has been progressing smoothly, and a large number of on-orbit scientific experiments have been carried out. According to a CCTV news report, on August 29, a briefing on the progress of the manned space engineering space application and the space station higher plant culture experiment was held at the Space Application Center of the Chinese Academy of Sciences and the Center of Excellence for Molecular Plants. According to reports, as of now, the payloads of the Wentian experimental module are in good condition and work stably. The experimental unit containing the experimental samples Arabidopsis seeds and rice seeds has been installed by the astronauts into the general experimental module of life ecology in the Wentian experimental cabin. At present, the plants have sprouted and grown. On July 28, the experimental unit containing the experimental samples of Arabidopsis thaliana seeds and rice seeds was installed by the astronauts into the general experimental module of life ecology in the Wentian experimental cabin, and the experiment was started on July 29 by injecting instructions through the ground program. At present, the seed germination of Arabidopsis thaliana and rice has been successfully started. The Arabidopsis seedlings have grown four leaves, the tall rice seedlings have grown to about 14 cm high, and the dwarf rice is also 4-5 cm high, and they are in good growth condition. , and follow-up experiments on the whole life cycle of Arabidopsis and rice from seed to seed in space will be completed. During the experiment, the astronauts will collect samples, cryopreserve them, and finally return to the ground with the astronauts for analysis. According to researcher Zheng Huiqiong of the Center of Excellence in Molecular Plants, it is hoped that through this study, the whole life cycle of rice from "seed to seed" cultivation experiments under space microgravity conditions will be completed for the first time in the world, and the key environmental parameters of rice cultivation will be obtained. Analyze the influence and molecular basis of space microgravity on rice growth and development, and provide important theoretical guidance for using rice for space food production. At the same time, through transcriptome analysis, the expression of key genes in the flowering pathway of Arabidopsis and rice and the changes in their regulatory networks were compared in the spatial environment, and the molecular mechanism of spatial microgravity on flowering in long-day and short-day plants was analyzed. Provide a theoretical basis for further creating crops adapted to the space environment and developing and utilizing space microgravity environmental resources. IT House learned that at 14:22 on July 24, 2022, Beijing time, the Long March 5B Yaosan carrier rocket carrying the Wentian experimental module was ignited and launched on time at my country's Wenchang Space Launch Site. After about 495 seconds, asked The sky experimental module and the rocket were successfully separated and entered the predetermined orbit, and the launch was a complete success. After the Wentian experimental module entered orbit, the status setting was successfully completed. At 3:13 on July 25, it was successfully docked with the forward port of the Tianhe core module. The entire rendezvous and docking process lasted about 13 hours. This is the first time that two 20-ton spacecraft in my country have achieved rendezvous and docking in orbit. The Wentian experimental module is the second module of the Chinese space station and the first scientific experimental module. After the launch into orbit, the astronauts have completed the unlocking, status setting, radiation measurement module and plant cultivation unit installation of the life ecology experimental cabinet general biological cultivation module, and completed the variable gravity scientific experimental cabinet, scientific glove box, low temperature storage device, biotechnology Unlocking and assembling the experimental cabinet, the assembly process is smooth and efficient. After the assembly is completed, the scientific experiment cabinet has carried out the established on-orbit test content. The relevant scientific experiment cabinet and scientific experiment system are working normally and the load state is good. Detailed interpretation and analysis of application data is currently underway.

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