盐度对威氏海链藻生长和叶绿素荧光参数的影响研究

doi:10.19640/j.cnki.jtau.2026.02.012

Journal of Tianjin Agricultural University ›› 2026, Vol. 33 ›› Issue (2): 69-74.doi: 10.19640/j.cnki.jtau.2026.02.012

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

Cheng Liuyang^1,2, Wang Yiwen^1,2, Dou Yong^{1,2,Corresponding Author}, Zhang Dan¹, Jia Xuying¹, Zhou Wenli^1,2

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

Abstract

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

CLC Number:

S917.3

Cheng Liuyang, Wang Yiwen, Dou Yong, Zhang Dan, Jia Xuying, Zhou Wenli. Effects of salinity on the growth and chlorophyll fluorescence parameters of Thalassiosira weissflogii[J]. Journal of Tianjin Agricultural University, 2026, 33(2): 69-74.

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

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