空间环境对红花生理状况的影响

目的：探讨空间环境中的微重力和重离子对红花的影响。方法：将中药红花的种子搭载于返回式人造卫星上，返回地面后用电泳等方法研究其过氧化物酶和可溶性蛋白质的变化。结果：飞行贯穿各组的过氧化物酶活性普遍高于地面对照组，飞行失重组的过氧化物酶活性略低于地面对照组。失重组和１次以下贯穿组的蛋白质含量高于地面对照组，而２～３次贯穿组的蛋白质含量则低于地面对照组。飞行失重组的过氧化物酶和蛋白质电泳图谱与地面对照组接近，而贯穿各组的过氧化物酶和蛋白质的电泳图谱则与地面对照组差异较大。结论：空间环境的微重力主要影响植物的生理状况，而重离子则不仅影响植物的生理状况，还影响植物的遗传基因。

Effect of Space Environment on Physiological State in Carthamus tinctorius L

Objective: To substantiate te effect of weightlessness and heavy ion radiation in space environment on medicinal plants. Methods: The seeds of medicinal plant Carthamus tinctorius were carried aboard a retrievable satellite during 3-18 July, 1994. After returning to earth, the changes of peroxidase and protein were studied by means of electrophoresis. Results: The result showed that the peroxidase activity of each group of seeds which were hit and penetrated by heavy ions rays was higher than that of the ground controlled seeds, but slightly lower than that of the weightless seeds. The protein contents of the weightless seeds and the seeds which is penetrated once and less than once by heavy ions rays were higher than those of the seeds which were kept on earth, but the seeds which were penetrated 2-3 times by heavy ion rays were lower than those of the ground controlled seeds. The peroxidase isozyme and protein patterns of the weightless seeds were similar to those of the ground controlled seeds, but very different between the heavy ion ray penetrated seeds and the earth kept seeds. Conclusion: It follows that the weightlessness in space environment has an effect mainly on the physiological condition of plants, but the heavy ion radiation has a stronger effect on the hereditary basis of plants.