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目的：探讨空间环境对药用植物的影响。方法：以洋金花种子为材料，搭载返回式人造地球卫星，回到地面后研究其过氧化物酶、酯酶和蛋白质的变化。结果：失重组材料的过氧化物酶活性和蛋白质含量低于地面对照组，而击中组材料的过氧化物酶活性和蛋白质含量高于地面对照组。三组材料的过氧化物酶、酯酶和蛋白质的电泳图谱基本相同。结论：微重力和高能重离子辐射对洋金花的作用不同，空间环境对洋金花的影响尚不足以使之产生变异。
Objective: To explore the impact of space environment on medicinal plants. Methods: The seeds of Populus trichocalycium were used as materials to carry retrospective artificial earth satellites. After returning to the ground, the changes of peroxidase, esterase and protein were studied. Results: The peroxidase activity and protein content of weightless group were lower than those of ground control group, but the peroxidase activity and protein content of the hit group were higher than those of ground control group. The electrophorogram of peroxidase, esterase and protein in three groups of materials were basically the same. Conclusion: The effects of micro-gravity and high-energy heavy ion radiation on the flower of the genus Plumbago are different, and the influence of the space environment on the genus Plumbago is not enough to make the variation.