Live Imaging Technique for Studies of Growth and Development of Chinese Cabbage Under Microgravity in a Recoverable Satellite (SJ-8)
Live Imaging Technique for Studies of Growth and Development of Chinese Cabbage Under Microgravity in a Recoverable Satellite (SJ-8)
复制标题
返回式卫星（SJ-8）微重力下大白菜生长发育实时成像技术研究
DOI：
10.1007/s12217-008-9005-8
复制
发表时间：
2008-08-01
影响因子：
1.8
通讯作者：
Zhang, Tao
中科院分区：
文献类型：
--
作者：
Zheng, Hui-Qiong;Wei, Ning;Zhang, Tao
首次应用活体成像技术，在实践八号返回式卫星上对小白菜在微重力条件下的生长发育进行了18天的观测。这些实验提供了深入了解植物在太空中发育过程中的植物行为。两个自动的，预先编程的CCD摄像机安装在植物实验室。试验目的：（1）种子萌发;（2）幼苗生长;（3）开花和授粉。幼苗和花的生长以2小时的间隔通过延时摄影进行跟踪。通过远程操作系统，成功地获得了微重力条件下大白菜植株生长的系列实时图像。通过与地面对照（1g）和三维回转器模拟实验的图像数据对比，发现微重力条件下植株的高度和叶片数明显减少，但叶片排列和形状特征没有明显改变。太空飞行抑制了花的开放和扩展。SJ-8生长的植株和回转器旋转的植株的花瓣在枯萎之前不能完全展开。
The live imaging techniques have been developed and applied to investigate for the first time the growth and development of Chinese cabbage for 18 days under microgravity conditions on board the Chinese SJ-8 recoverable satellite. These experiments offer insight into plant behaviors operating during plant development in space. Two automatic, preprogrammed CCD cameras were installed in the plant experimental chamber. The experimental objectives were: (1) seed germination; (2) seedling growth; (3) flower opening and pollination. The growth of seedlings and flowers were followed by time lapse photography at 2 h intervals. Serial real-time images of the Chinese cabbage plant growth under microgravity were successfully obtained through the remote operating system. The image data obtained from space experiment, in comparison with the results from ground control (1 g) and 3D clinostat stimulate experiments, showed that the height of plant and the number of leaves were significantly reduced under the microgravity conditions, but characters of leaf arrangement and leaf shape were not altered obviously. Flower opening and expansion were inhibited by exposed to space flight condition. The petals of flowers from both SJ-8 grown plants and clinostat rotated plants couldn't fully expand before wilted.