Shulou(Shulou.com)11/24 Report--

CTOnews.com, August 29 News: at present, the Shenzhou 14 astronauts have been working and living in orbit for nearly three months, all kinds of work are progressing smoothly, and a large number of on-orbit scientific experiments have been carried out. According to CCTV news, on August 29, a briefing on the phased progress of the space application of manned space engineering and the higher plant culture experiment of the space station was held at the Tencent App Center and Molecular Plant Center of Excellence in the Chinese Academy of Sciences.

According to reports, up to now, the payload of the test module is in good condition and working stably, and the scientific experiment project launched with the module is carried out in orbit as planned. The experimental unit containing Arabidopsis thaliana seeds and rice seeds has been installed by the astronauts into the general experimental module of life ecology in the experimental module, and the plants have germinated and grown at present.

On July 28, the experimental unit containing Arabidopsis thaliana seeds and rice seeds was installed by the astronauts into the general experimental module of life and ecology in the experimental module, and the experiment was started on July 29 through the injection instruction of the ground program. At present, the seed germination of Arabidopsis thaliana and rice has been successfully initiated. Arabidopsis thaliana seedlings have grown four leaves, tall rice seedlings have grown to about 14 centimeters tall, and dwarf rice has grown 4 centimeters and 5 centimeters tall, with good growth conditions. the subsequent experiments of Arabidopsis thaliana and rice from seed to seed life cycle in space will be completed, and samples will be collected and cryopreserved by the astronauts in the course of the experiment, and finally returned to the ground with the astronauts for analysis.

According to Zheng Huiqiong, a researcher at the Center of Molecular Plant Excellence, it is hoped that through this study, the whole life cycle culture experiment of rice from "seed to seed" under the condition of space microgravity will be completed for the first time in the world, and the key environmental parameters of rice culture will be obtained, which will provide important theoretical guidance for further analyzing the effect of space microgravity on rice growth and development and molecular basis, and using rice for space grain production. At the same time, transcriptome analysis was used to compare the expression and regulatory network changes of key genes in flowering pathway between Arabidopsis thaliana and rice in space environment, and to analyze the molecular mechanism of space microgravity on long-day and short-day plant flowering. to provide a theoretical basis for the further creation of crops adapted to the space environment and the development and utilization of space microgravity resources.

CTOnews.com learned that the long March 5B Yao-3 carrier rocket carrying the experimental module on July 24, 2022, 14:22 Beijing time, was ignited and launched on time at the Wenchang space launch site in China. About 495 seconds later, the module was successfully separated from the rocket and entered the scheduled orbit, and the launch was a complete success.

After the experimental module was put into orbit, the status setting was successfully completed. At 03:13 on July 25, it was successfully docked at the front port of the sky and the core module. The whole rendezvous and docking process lasted about 13 hours. This is the first rendezvous and docking of two 20-ton spacecraft in orbit and the first rendezvous and docking of astronauts in the space station during their stay in orbit.

The Sky experiment Module is the second segment of the Chinese space station and the first scientific experiment module. After being launched into orbit, the astronauts have completed the unlocking, state setting, radiation measurement module and plant culture unit installation of the general biological culture module of the life and ecology experiment cabinet, and completed the unlocking and assembly of the variable gravity science experiment cabinet, the science glove box, the cryogenic storage device, and the biotechnology experiment cabinet, and 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 work normally, and the load state is good. At present, detailed interpretation and analysis of application data are under way.

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