医生把胡萝卜的种子和根入药，是基于“良药苦口”这个理论的。
Doctors used carrot seeds and roots as medicine, on the theory that foods that taste bad must be good for you.
结果发现灰葡萄孢代谢产物对供试植物种子萌发后根和芽的伸长以及幼苗的生长都有一定的抑制作用，但是不同菌株间差异明显。
The metabolites generally showed certain toxicity on the root and bud growth of plant seeds and the seeding growth of plants tested, but different isolates exhibited different activities.
目前研究表明：较低浓度的稀土元素可以促进植物种子的萌发、根的生长、根重的增加和不定根发生等。
The present results showed that the REEs at a lower concentration stimulate germination of seeding, promote root growth, increase root length and induce adventitious rooting.
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