植物に対するNaphthylamineの効果(第1報) : α-Naphthylamineが水稲に及ぼす影響について

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The object of this study is to clarify the physiological relation between α-Naphthylamine and plant life. Author took up a rice plant for this purpose and treated it by water and soil culture. The experiment consisted of plots containing 200,100,50,30,10,5,3,and 1 ppm of α-Naphthylamine in each 1/20000 tan Wagner's pot and the control. In water culture no fertilizer was nsed, only naphthylamine is dissolved in distilled water, and in soil cultre, plants were grown in quartz sand and sandy loam, with fertilizer. The object of the former is to make out the influence upon a young stage of plants, and that of the latter is to observe the inflnence throughout the whole stages of life. The results obtained are summerized as follows. (1) In the younger stage of growth, the accordance with strength of solution increased both the length and weight of roots (viz 8〜20% of length, 6〜11% of weight) as compared with the control. α-Naphthylamine were sedimented as reddishviolet precipitation of oxy-Naphthylamine on the roots by oxidobelity of roots which did not cause any physiological hindrance. (2) On the plots between 30〜200ppm increase of 8〜23% in tillers and 4〜7% in number of ears was observed moreover, both of these were distinctly increased in accordance with the thickness. (3) Concerning the influence on the hulled grains, application of α-naphthylamine was nearly correlated to the effective stems ratio and gave little increase in yield of grains. As for a total yield, plots between 30〜50 ppm were better.
社団法人日本土壌肥料学会の論文
1956-07-05

植物に対するNaphthylamineの効果(第1報) : α-Naphthylamineが水稲に及ぼす影響について

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