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Spaceflight effects on consecutive generations of peas grown onboard the Russian segment of the International Space Station

机译：太空飞行对国际空间站俄罗斯站上豌豆连续生长的影响

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摘要

In the period from March 2003 to April 2005 we fulfilled five experimental cultivations of genetically marked dwarf pea species in greenhouse Lada installed in the Russian segment (RS) of the International Space Station (ISS). The purpose of this series of experiments was to make morphologic and genetic analysis of pea plants grown in successive generations. According to our results, pea growth and development over the full cycle of ontogenesis (from seed to seed) taking place in space greenhouse Lada were not different as compared with the ground control plants. In addition, four successive pea crops gathered in space flight did not loose their reproductive functions and formed viable seeds. Genetic analysis of the plants grown from the "space" and "ground" seeds produced by the first to fourth successive crops was performed using the methods of chromosomal aberrations count and Random Amplified Polymorphic DNA (molecular method). No genetic polymorphism was found either in the experimental or control crops. This can serve as a sound argument for the supposition that the genetic apparatus of plants is not impacted by exposure of several successive generations to the conditions of space flight.
机译：从2003年3月到2005年4月，我们在国际空间站（ISS）俄罗斯站（RS）的Lada温室中完成了五种遗传标记矮豌豆种的实验种植。这一系列实验的目的是对连续世代生长的豌豆植物进行形态和遗传分析。根据我们的结果，与地面控制植物相比，在太空温室Lada中发生的豌豆在整个成虫周期（从种子到种子）的整个生长和发育过程中没有差异。此外，连续四次在太空飞行中收集的豌豆作物没有丧失其繁殖功能，并形成了可行的种子。使用染色体畸变计数和随机扩增多态性DNA方法（分子方法），对由第一批至第四批连续作物产生的“空间”和“地面”种子生长的植物进行了遗传分析。在实验作物或对照作物中均未发现遗传多态性。这可以为假设植物的遗传装置不受连续几代暴露于太空飞行条件的影响的合理论证提供支持。

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