它也将有助于幼龄植物保持正常的生长轨迹和幼苗形态建成，但是高强度的UV - B光照射是有害的。
It helps young plants stay on the right track of development and AIDS seedling morphogenesis, but too much UV-B light can be toxic.
选的幼苗是同一批中正常的一棵，但它具有较好的生长潜能。
Elected in the same group of seedlings is a normal, but it has good growth potential.
结果表明，在正常和干旱条件下，外源多胺均能促进油松幼苗的生长，且干旱条件下的促进效果更为显著。
The results showed that the growth of seedlings was promoted by exogenous polyamines under normal water and drought conditions, and more notable under drought condition.
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