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Isabel Pimentel and Samuel Contreras

) or far-red (730 nm) light-emitting diodes. Light-emitting diodes (LED) were used for the R-light seed conditioning, with a R:FR of 140 and 6 μmol·m −2 ·s −1 photosynthetically active radiation ( PAR ). The PAR and R:FR quantifications were

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Aisu Gu, Wenfang Liu, Chao Ma, Jin Cui, Richard J. Henny, and Jianjun Chen

of leaves) of each plantlet was measured with a leaf area meter (Skye Co., U.K.). Table 1. Parameters of light spectral energy distribution of florescent lamps and light-emitting diodes used for evaluating rooting and growth of adventitious shoots of

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Noriko Ohtake, Masaharu Ishikura, Hiroshi Suzuki, Wataru Yamori, and Eiji Goto

are shown. Fig. 1. Irradiation wavelengths and patterns. Plants were grown under cool white fluorescent lamps as well as red (with a peak at 660 nm) and blue (with a peak at 450 nm) light-emitting diodes in six irradiation patterns with equal daily

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Yuya Mochizuki, Saori Sekiguchi, Naomi Horiuchi, Thanda Aung, and Isao Ogiwara

under base conditions of a CO 2 500-μmol·s –1 flow and a CO 2 concentration of 350 μmol·mol –1 . Fig. 1. Spectrum distribution of blue, green, and red light-emitting diodes (LEDs). Relative values are shown for each peak wavelength. Photosynthetic

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Giedrė Samuolienė, Akvilė Urbonavičiūtė, Pavelas Duchovskis, Zenonas Bliznikas, Pranciškus Vitta, and Artūras Žukauskas

solid-state lighting, which is based on narrow-bandwidth light-emitting diodes (LEDs) and offers possibilities in tailoring the illumination spectrum and controlling morphogenesis and productivity of plants ( Folta and Childers, 2008 ; Massa et al

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Theoharis Ouzounis, Eva Rosenqvist, and Carl-Otto Ottosen

of flavin redox states J. Biol. Chem. 282 9383 9391 Bourget, M.C. 2008 An introduction to light-emitting diodes HortScience. 43 1944 1946 Briggs, W.R. Huala, E. 1999 Blue-light photoreceptors in higher plants Annu. Rev. Cell Dev. Biol. 15 33 62

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Geoffrey Weaver and Marc W. van Iersel

by the integrated PPFD in the 400- to 500-nm range (blue). Fig. 1. Spectrum of the light-emitting diode (LED) light bars used in the experiments. Values represent the average of two measurements collected under red or white LEDs. Seeds of ‘Little

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Fumiomi Takeda, D. Michael Glenn, and Gary W. Stutte

fertilized as needed. In late July, leaves were detached from 10 transplants and leaf area (cm 2 /plant) was determined with a LI-COR leaf area meter (LI-COR Biosciences, Lincoln, NE). A red light-emitting diode (LED) lamp (Holiday Creations, Inc., Littleton

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Brian R. Poel and Erik S. Runkle

lamps, most commonly from HPS lamps, and usually operates during cloudy conditions and at night. Light-emitting diodes have increasing potential to be used for SR applications as the technology develops, particularly as their intensity and efficacy

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Ki-Ho Son, Jin-Hui Lee, Youngjae Oh, Daeil Kim, Myung-Min Oh, and Byung-Chun In

). Therefore, a systematic approach is necessary for developing technology that controls light conditions as these influence crop yield and quality factors. Light-emitting diodes, commonly used as electrical light sources for closed-type plant production