LED光质对樱桃萝卜苗生长发育的影响

Effects of LED light quality on the growth of cherry radish seedling

采用LED光源在温度和光周期可控的人工气候室照射樱桃萝卜(Raphanus sativus L. var. radculus pers),研究不同比例的LED红蓝组合光对樱桃萝卜苗生长发育的影响.结果表明:不同的光质处理对樱桃萝卜苗有显著影响,纯蓝光和高比例蓝光会抑制根的伸长,降低根的表面积和体积,而红蓝质比为1∶1有利于促进地上部生长,红蓝比1∶3的组合光可以显著促进根系生长发育.蓝光照射处理可以显著增加叶片叶绿素含量,蓝光比例越高,效果越显著.总而言之,不同的红蓝光质处理可以显著地调控樱桃萝卜苗的生长发育.

LED light source was used to irradiate cherry radish（ Raphanus sativus L. var. radculus pers ） in an artificial climate room with controllable temperature and photoperiod in order to investigate the effects of different proportions of LED red light and blue light combinations on the growth and development of cherry radish seedlings. The results showed that different light quality treatment had a significant influence on the cherry radish seedlings, pure blue light and a high proportion of blue light inhibited the root elongation, root surface area and root volume. Furthermore, red and blue 1∶ 1 increased shoot fresh weight, and red and blue 1∶ 3 was benefit to the growth and development of the root. The irradiation blue light significantly increased the chlorophyll content of leaves, and the effect was more significant with higher blue light ratio. In short, different red light and blue light combinations could significantly control the growth and development of cherry Turnip Sprouts.