Light demands of juvenileLaminaria japonica |
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| Authors: | Fei Xiugeng Jiang Benyu Ding Meili Wu Yajing Huang Ruyi Li Hanchang |
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| Institution: | (1) Experimental Marine Biological Laboratory EMBL, Academia Sinica, Qingdao;(2) Institute of Oceanology, Academia Sinica, Qingdao;(3) Sansha Laminaria Sporeling Cultivation Station, Fujian |
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| Abstract: | The light demands of seaweeds is an interesting and rather complex phenomenon because they depend not only on the species
but also on their different development stages. Even different parts of the same plant sometimes have different light demands.
Light control is an important procedure at large scaleLaminaria nursery stations in China. Technicians and scientists have different viewpoints on the best method to regulate light. A culture
study onLaminaria japonica starting from zoospores to several centimeter sporophytes to find the optimal and critical irradiance ranges for juvenileLaminaria at different development stages added more knowledge on this aspect. Experiment results show gametophytes can not tolerate
irradiance of more than 150 μE m−2s−1 while sporophytes can tolerate more than 519 μE m−2s−1. This big difference starts from the very early stage of 1-to 2-celled sporophytes. The biological basis and mechanism of
this phenomenon need further research.
Contribution No. 1515 from the Institute of Oceanology, Academia Sinica
Contribution No. 1 from the Experimental Marine Biological Laboratory |
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