| 底栖铜藻和漂浮铜藻生长与光合生理的比较 |
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| 引用本文： | 刘正一,孙平,秦松,李晶晶,庄龙传,宋宛霖,毕远新,钟志海. 底栖铜藻和漂浮铜藻生长与光合生理的比较[J]. 生态学杂志, 2021, 0(1): 76-83 |
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| 作者姓名： | 刘正一 孙平 秦松 李晶晶 庄龙传 宋宛霖 毕远新 钟志海 |
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| 作者单位： | 中国科学院烟台海岸带研究所;河海大学海洋学院;浙江省海洋水产研究所 |
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| 基金项目： | 国家重点研发计划(2016YFC1402106);山东省自然科学青年基金(ZR201807120023);烟台市重点研发项目(2018ZHGY082);烟台市科技创新发展计划(2020MSGY058)资助。 |
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| 摘 要： | 铜藻是构成"金潮"的关键种.为了探索"金潮"的爆发原因,采集同一位点的底栖和漂浮铜藻,在温度15℃、光照强度5000 lx条件下,经过7天培养后,比较了两类铜藻生长速率和各组织部位(新生叶、老叶、气囊、枝干)生长以及光合生理的差异.结果表明:漂浮铜藻的生长速率(RGR)为8.25％? d-1,而底栖铜藻的RGR仅为5....
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| 关 键 词： | 铜藻 光合作用 相对生长速率 叶绿素荧光 |
Comparative analysis of growth and photosynthetic characteristics in benthic and floating Sargassum horneri |
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| LIU Zheng-yi,SUN Ping,QIN Song,LI Jing-jing,ZHUANG Long-chuan,SONG Wan-lin,BI Yuan-xin,ZHONG Zhi-hai. Comparative analysis of growth and photosynthetic characteristics in benthic and floating Sargassum horneri[J]. Chinese Journal of Ecology, 2021, 0(1): 76-83 |
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| Authors: | LIU Zheng-yi SUN Ping QIN Song LI Jing-jing ZHUANG Long-chuan SONG Wan-lin BI Yuan-xin ZHONG Zhi-hai |
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| Affiliation: | (Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,Shandong,China;College of Oceanog-raphy,Hohai University,Nanjing 210098,China;Marine Fisheries Research Institute of Zhe-jiang Province,Zhoushan 316021,Zhejiang,China) |
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| Abstract: | Sargassum horneri is a key species in "golden tide". In order to explore the reason of"golden tide",we collected floating and benthic S. horneri at same site,and cultured at 15 ℃and 5000 lx for 7 days,and then compared the growth rates and photosynthetic characters between the two types of S. horneri. The results showed that the relative growth rate( RGR) of floating S. horneri was 8.25%·d-1,while that of benthic S. horneri was only 5.79%·d-1. The photosynthetic pigment contents in leaves( old and newborn leaves) of benthic S. horneri were higher than that of floating S. horneri. Floating S. horneri had higher NPQ and Y( NPQ) values than benthic ones. Newborn leaves of both species types had higher maximum relative electron transfer rate( r ETRmax) and saturation light intensity( Ik) than other tissues( old leaf,vesicle,and stem). These results indicated that there were significant differences in physiological characteristics between benthic and floating S. horneri. Floating S. horneri had better growth ability and stronger heat dissipation ability. Newborn leave had stronger tolerance under high light. Our results suggest that the floating type was more suitable to sea surface environment. |
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| Keywords: | Sargassum horneri photosynthesis relative growth rate chlorophyll fluorescence |
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