Now 85, he said developing seeds has always concerned him: " I noticed the seed quality in that part of world was so much below our standards and below achievable standards" .

现年85岁的他表示，研发种子一直困扰着我：" 我注意到那个地区的种子质量远远低于我们的标准，也低于可达到的标准" 。

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。