首页> 外文会议>Thirty-Ninth Space Congress, Apr 30-May 3, 2002, Cape Canaveral, Florida >Characterization of potential ISS/Space Shuttle environmental conditions on growth and development of R. sativus: Ground studies for the RASTA Space flight experiment
【24h】

Characterization of potential ISS/Space Shuttle environmental conditions on growth and development of R. sativus: Ground studies for the RASTA Space flight experiment

机译:潜在的国际空间站/航天飞机环境条件对番茄生长发育的表征:RASTA太空飞行实验的地面研究

获取原文
获取原文并翻译 | 示例

摘要

Using radish as a model system, the RASTA project (Radish Assimilation in Spaceflight Testbed Atmospheres) will be investigating carbon partitioning of salad crops in microgravity. Before this goal can be accomplished, the effects of the unique environment of orbiting spacecraft on growth and development of radish must be characterized so they can be separated from those of microgravity. The environmental conditions on ISS and the space shuttle most likely to effect carbon partitioning in radish are air temperature, CO_2 concentration and atmospheric contaminants. Several radish cultivars were grown in temperatures ranging from 18-30℃ at ambient (400 part per million [ppm]) or elevated (1,500, 3,000 and 10,000 ppm) CO_2. The effects of temperature and CO_2 on growth and development of these cultivars were characterized and a high temperature cultivar was identified. In a separate series of experiments, radishes were exposed to different levels of ethylene, a biologically active volatile organic compound, to characterize its impact on radish growth and development over a range of concentrations. With these environmental characterizations, the effect of microgravity on carbon partitioning can be more readily separated from environmental factors coincidental to the spacecraft environment.
机译:RASTA项目(在太空飞行试验台中的萝卜吸收)将以萝卜为模型系统,将研究微重力作用下色拉作物的碳分配。在实现这一目标之前,必须先确定航天器独特环境对萝卜生长和发育的影响,以便将其与微重力区分开。国际空间站和航天飞机最可能影响萝卜中碳分配的环境条件是气温,CO_2浓度和大气污染物。在环境温度(百万分之四百(400 ppm))或升高的二氧化碳浓度(1,500、3,000和10,000 ppm)下,几个萝卜品种的生长温度为18-30℃。表征了温度和CO_2对这些品种生长和发育的影响,并鉴定了高温品种。在一系列单独的实验中,将萝卜暴露于不同水平的具有生物活性的挥发性有机化合物乙烯,以表征其在一定浓度范围内对萝卜生长和发育的影响。通过这些环境特征,可以更容易地将微重力对碳分配的影响与与航天器环境相符的环境因素分开。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号