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在宇宙空间存在着微重力,不同能量的宇宙线和高度真空等条件,直接影响着生物的生存、生长、发育、衰老甚至癌变。为了探索空间条件对植物种子的诱变作用,1987年我国将25种植物种子搭载到二个返地卫星,处理后在地面种植,获得了丰富的变异。1988年将水
The existence of microgravity in space, cosmic rays of different energies and high vacuum conditions directly affect the survival, growth, development, aging and even canceration of living beings. In order to explore the mutagenic effects of space conditions on plant seeds, in 1987 China carried 25 kinds of plant seeds into two ground-returning satellites and planted them on the ground after treatment, thus obtaining abundant variation. 1988 will be water