Effect of LEDs (Light Emitting Diodes) Irradiation on Growth and Mineral Absorption of Lettuce (Lactuca sativa L. ‘Lollo Rosa’)
Effect of LEDs (Light Emitting Diodes) Irradiation on Growth and Mineral Absorption of Lettuce (Lactuca sativa L. ‘Lollo Rosa’)
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LED（发光二极管）照射对生菜（Lactuca sativa L. ‘Lollo Rosa’）生长和矿物质吸收的影响
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Jang Heui Chai
中科院分区：
文献类型：
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作者：
Y. Shin;M. Lee;Eun Sook Lee;J. Ahn;Jae;Ha Joong Kim;H. Park;Young;So Deuk Park;Jang Heui Chai
本研究的目的是阐明led（发光二极管）照射对叶莴苣（Lactuca sativa L. ' Rollo Rosa '）早期生长和无机元素的影响。在叶片形态变化中，红光照射下茎伸长和下胚轴长度表现出较差的生长，而红蓝光照射导致植株高度降低，叶片数量增加，鲜重增加。在Hunter’s color和SPAD值的变化中，在红+蓝和荧光照射下生长的生菜幼苗的a*值更高，在这些光照射下，SPAD值没有变化。有趣的是，在红蓝光照射下，相对叶绿素含量增加了1.8倍。无机元素（N、Ca、Mg、Mn、Fe）和抗坏血酸含量均高于荧光生菜（P、Mn含量较高）。综上所述，可以考虑在装有led的容器中使用红蓝光照射，以促进叶莴苣的生长和更高的营养吸收。
The objective of this study was carried out to elucidate the effect of LEDs (light emitting diodes) irradiation in relation to early growth and inorganic elements in leaf lettuce (Lactuca sativa L. ‘Rollo Rosa’). In morphological changes of leaves, shoot elongation and hypocotyl length showed poor growth in red light irradiation, while the red + blue light irradiation induced shorter plant height and much greater leaf numbers resulting in increased fresh weight. In change of the Hunter’s color and SPAD values, lettuce seedlings grown under in red + blue and fluorescent light irradiation had a higher a* value, otherwise SPAD values were not changed in these light irradiations. Interestingly, relative chlorophyll contents showed 1.8 times increased redness in the treatment of red + blue light irradiation. Inorganic element (N, Ca, Mg, Mn, and Fe) and ascorbic acid contents were increased in lettuce plants grown under LEDs light irradiation compared to those of lettuce grown under the fluorescent light which showed higher P and Mn contents. In conclusion, it is considered that red + blue light irradiation which stimulates growth and higher nutrient uptake in leaf lettuce could be employed in containers equipped with LEDs.