19 ヒロハノキカイガラタケ菌の発育に及ぼす弗化ソーダの影響に就て

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This paper reports the results of the writer's experiments on the effect of Natrium fluoride to the mycelial growth of Lenzites subferruginea BERK.In order to oserve the relation of temperature and medical wetting time to the growth of the fungus on the agar plate of potato decoction, the method of HEMMI (4) was applied to the present experiments.The concentrations of Natrium fluoride used in the experiments, 0.01,0.05,0.1 and 0.2%; temperatures tested, 26°, 30°, 34° and 38℃; and medical wetting times tested, 30,60,120,180,240 and 300 minutes.So far as the present experiments showed, the inhibiting action increased with the rise of temperature, and when the temperature was near optimum (34℃) of the fungus showed the best, and lower or higher temperatures weakensed its action.In the 0.1 and 0.2% solutions at 34℃, the inhibiting action increased rapidly in proportion to the longevity of medical wetting time, especially after 120〜180 minutes, and finally the mycelial growth was checked completely in 0.2% at 240 minutes. But in lower concentrations than 0.05 at 34℃, the action reduced.In 0.01 and 0.05% at other temperatures, such as 26°, 30°, and 38℃, the inhibiting action reduced rapidly and seemed to have no relation to the longevity of medical wetting time, but in higher concentrations than 0.1% the action was shown and increased rapidly with the longevity of medical wettiug time.
一般社団法人日本森林学会の論文
1952-03-25