天津农学院学报 ›› 2026, Vol. 33 ›› Issue (2): 69-74.doi: 10.19640/j.cnki.jtau.2026.02.012

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盐度对威氏海链藻生长和叶绿素荧光参数的影响研究

程鎏炀1,2, 王依雯1,2, 窦勇1,2,通信作者, 张丹1, 贾旭颖1, 周文礼1,2   

  1. 1.天津农学院 农业农村部智慧养殖重点实验室,天津 300392;
    2.天津现代天骄农业科技股份有限公司,天津市绿色生态饲料重点实验室,天津 301801
  • 收稿日期:2024-09-12 出版日期:2026-04-30 发布日期:2026-05-06
  • 通讯作者: 窦勇(1985—),男,讲师,博士,研究方向:生物饵料与微藻资源化用。E-mail:douyonghero@163.com。
  • 作者简介:程鎏炀(1998—),男,硕士在读,研究方向:微藻生理生态。E-mail:351749424@qq.com。
  • 基金资助:
    农业农村部智慧养殖重点实验室(部省共建)开放基金(2023-TJAUKLSBF-2110); 国家自然科学基金项目(32303038); 中央引导地方科技发展资金(22ZYCGSN00010)

Effects of salinity on the growth and chlorophyll fluorescence parameters of Thalassiosira weissflogii

Cheng Liuyang1,2, Wang Yiwen1,2, Dou Yong1,2,Corresponding Author, Zhang Dan1, Jia Xuying1, Zhou Wenli1,2   

  1. 1. Key Laboratory of Smart Farming, Ministry of Agriculture and Rural Affairs, Tianjin Agricultural University, Tianjin 300392, China;
    2. Tianjin Modern Tianjiao Agricultural Science and Technology Co., Ltd., Tianjin Key Laboratory of Green Ecological Feed, Tianjin 301801, China
  • Received:2024-09-12 Online:2026-04-30 Published:2026-05-06

摘要: 本试验利用叶绿素荧光技术,结合藻体光合色素含量和生长率变化,研究了盐度对威氏海链藻(Thalassiosira weissflogii)生长和PSII光化学指标的影响。在不同盐度(15、25、30、35和45)条件下,测定威氏海链藻的特定生物量、吸光值和叶绿素含量等参数。结果显示,威氏海链藻细胞密度生长的适宜盐度为15,藻细胞在盐度15~35下生长良好。藻细胞光合系统Ⅱ在25~30盐度条件下功能正常;45盐度条件下,遭受不同程度破坏。盐度对威氏海链藻生长和生化组分具有显著影响(P<0.05)。高盐(45)对威氏海链藻细胞形成了胁迫,对其生长产生一定抑制作用。

关键词: 威氏海链藻, 盐度, 生长指标, 叶绿素荧光参数, 光合生理指标

Abstract: In this experiment, the effects of salinity on the growth and PSII photochemical indexes of Thalassiosira weissflogii was investigated by using chlorophyll fluorescence technique in conjunction with the changes in photosynthetic pigment content and growth rate of the algae. The parameters of specific biomass, light absorption value and chlorophyll content of T. weissflogii were determined under different salinity conditions(15, 25, 30, 35 and 45). The results showed that the suitable salinity for cell density growth of Thalassiosira weissflogii was 15, and the algal cells grew well at salinities ranging from 15 to 35. The photosynthetic system II of the algal cells functioned normally under the salinity conditions of 25 to 30, while it suffered different degrees of damage under the salinity conditions of 45. Salinity had a significant effect(P<0.05)on the growth and biochemical components of Chlamydomonas reinhardtii. The high salinity(45)formed a stress on the cells of Thalassiosira weissflogii, and inhibited its growth to a certain extent.

Key words: Thalassiosira weissflogii, salinity, growth index, chlorophyll fluorescence parameter, photosynthetic physiological index

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