Effect of green light wavelength and intensity on photomorphogenesis and photosynthesis in Lactuca sativa
Effect of green light wavelength and intensity on photomorphogenesis and photosynthesis in Lactuca sativa
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DOI：
10.1016/j.envexpbot.2011.08.010
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发表时间：
2012-01-01
影响因子：
5.7
通讯作者：
Yoshihara, T.
中科院分区：
文献类型：
--
作者：
Johkan, M.;Shoji, K.;Yoshihara, T.
研究了不同峰值波长和光强的绿色发光二极管（LED）对生菜生长和光合作用的影响。所用的绿色LED为G510（峰值波长：510 nm;半峰高处的带宽：18 nm）、G520（524 nm; 30 nm）和G530（532 nm; 36 nm），光合作用光子通量（PPF）分别为100、200和300 μ mol m（-2）s（-1）（G530的最大输出为PPF 260）。PPF 100的绿色LED光照射下的生菜植株的地上部和根系生长与白色荧光灯相比有所下降，但PPF 200的绿色LED光照射下的植株的根系生长有所增加，并且在PPF 300的G510下生长的植株的地上部生长是所有光源中最高的。在PPF 200下，绿色LED光处理的叶片光合速率（Pn）显著高于PPF 100，G510光处理的Pn最高。这些结果表明，高强度的绿色LED光对促进植物生长是有效的，特别是短波长的绿色光可用于活跃的植物生长。(C)2011 Elsevier B. V.保留所有权利。
In this study, the effects of green light-emitting diodes (LEDs) with different peak wavelengths and light intensities on lettuce growth and photosynthesis were evaluated. The green LEDs used were G510 (peak wavelength: 510 nm; band width at half peak height: 18 nm), G520 (524 nm; 30 nm) and G530 (532 nm; 36 nm) at a photosynthetic photon flux (PPF) of 100, 200 and 300 mu mol m(-2) s(-1), respectively (maximum output of G530 was PPF 260). Shoot and root growth in lettuce plants irradiated with green LED light at PPF 100 decreased compared with white fluorescent light, but root growth of plants irradiated with green LED light at PPF 200 increased, and shoot growth of plants grown under G510 at PPF 300 was the highest of all light sources. Leaf photosynthetic rate (Pn) of plants irradiated with green LED light at PPF 200 was dramatically higher than that at PPF 100, and the Pn of plants irradiated with G510 was the highest of all light sources. These results indicated that high-intensity green LED light was effective to promote plant growth and, in particular, short-wavelength green light was available for active plant growth. (C) 2011 Elsevier B.V. All rights reserved.