›› 2017, Vol. 29 ›› Issue (4): 631-636.DOI: 10.3969/j.issn.1004-1524.2017.04.17

• Environmental Science • Previous Articles     Next Articles

Effect of LED lightings on growth of Sargassum horneri under different photoperiods

LI Ke, PAN Yaoru, WU Jiaping, XIAO Xi*   

  1. Ocean College, Zhejiang University, Zhoushan 316000, China
  • Received:2016-12-14 Online:2017-04-20 Published:2017-04-27

Abstract: In this study, 4 kinds of LED (white, red, green and blue) were tested as light sources for Sargassum horneri cultivation under 4 photoperiods (24 h/0 h, 18 h/6 h, 12 h/12 h, 6 h/18 h, L/D). It was shown that for all LED light sources, maximum biomass accumulation of S. horneri were achieved under the photoperiod of 24 h/0 h(L/D). The surface absorption spectrum of S. horneri and the emission spectrum of 4 LED light sources were also analyzed. The surface absorption spectrum of S. horneri showed a wide peak in blue emission region and a sharp peak in red emission region, respectively. Therefore, blue-LED light could satisfy the growth of S. horneri and would be an ideal supplementary light for S. horneri cultivation.

Key words: Sargassum horneri, macroalgae, LED, specific growth rate, photoperiod

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