Plant growth in space faces problems such as delayed flowering time, low seed setting rate, and decreased seed quality, and only a few crops like rape, wheat, and peas have completed experiments in space to obtain seeds.

在空间条件下，植物开花时间延迟、开花数目少、种子结实率低和种子质量下降等问题，目前只有油菜、小麦和豌豆少数几种作物在空间完成了从种子到种子的实验。