海藻の原形質に関する研究-III : 塩分と薬害との関係について

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The experiments were carried out in the range from 0 to 34‰, in chlorinity and with the concentration of 0.01-, 0.003-, and 0.001 mol of ammonium sulfate. (1) As to the chlorinity, the cell was deadly injured in lower chlorinity from 0 to 4‰ considerably injured from 6 to 10‰, normal and sound from 12 to 20‰, and again considerably injured over 22‰. (2) Ammonium sulfate is considerably poisonous even in low concentration of about 0. 001 mol. It was notably characteristic that the efficiency was more activated in the water of lower chlorinity between 8 and 10‰, and in that of higher chlorinity between 22 and 26‰, than the chlorinity between 12 and 20‰ which is the similar value to the natural sea water. (3) According to these experiments, it is suggested that the adaptability of the laver to the salt water is not so flexible in far lower or higher chlorinity from the natural sea water.
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