不同条件下条斑紫菜光合效率的比较研究.pdf

第29 卷 第6 期 海 洋 通 报 Vol. 29, No. 6 2010 年 12 月 MARINE SCIENCE BULLETIN Dec. 2010 不同条件下条斑紫菜光合效率的比较研究 1 1 2 赵小波 ，张学成 ，许璞 （1，中国海洋大学 海洋生命学院，山东 青岛 266003 ；2 ，常熟理工学院生物与食品工程学院，江苏 常熟 215500 ） 摘 要：用叶绿素荧光仪测试了 7 个条斑紫菜品系在不同氮磷浓度、盐度、pH 及光质条件下的光合效率及光合色素含量。结果显示， 条斑紫菜叶状体最适氮浓度为 1.0 ~ 1.5 mg/L，最适磷浓度为 0.05 ~ 0.15 mg/L ；在盐度为20 ~ 30 条件下紫菜的光合效率保持较高的 水平；紫菜生长的适宜 pH 值为 8.0。在其它条件相同时，紫菜在不同的光质照射下光合效率顺序为：白光＞绿光＞红光＞蓝光。所 实验紫菜品系的藻红蛋白含量和变异幅度均显著大于藻蓝蛋白和别藻蓝蛋白，而叶绿素含量无明显变异。 关键词：条斑紫菜；光合效率；光合色素 中图分类号：Q949.29 文献标示码：A 文章编号： 1001-6932(2010)06-0623-06 Research on the photosynthetic efficiency of seven strains of Porphyra yezoensis under different conditions 1 1 2 ZHAO Xiao-bo , ZHANG Xue-cheng , XU Pu (1. college of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; 2. Biology and Food engineering department, Changshu Institute of Technology, Changshu, 215500, China) Abstract: Photosynthetic efficiency of seven strains of Porphyra yezoensis under different salinities, pH, light quality, concentrations of phosphorus and nitrogen was investigated by mini-PAM, and the content of the photosynthetic pigments was also measured in the experiment. Results showed that the salinities between 20 and 30 were better for Porphyra yezoensis, and in this range, the sample could keep a high grade of Fv/Fm . The fitting pH for Porphyra yezoensis is 8.0.The result varies when the sample w