Effect of Fulvic Acid-Fe Derived from the Forest on the Growth of <I>Laminaria Religiosa</I> Miyabe and <I>Undaria Pinnatifida</I> Suringan

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  • 森林起源のフルポ酸鉄がコンブやワカメの生長に果たす効果
  • Effect of Fulvic Acid-Fe Derived from the Forest on the Growth of Laminaria Religiosa Miyabe and Undaria Pinnatifida Suringan
  • Effect of Fulvic Acid Fe Derived from t

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Oogonium formation and the growth rates of young sporophytes in the presence of several forms of iron were bserved. The respective percentages of oogonium formation of L. religiose and U. pinnatifida after 30 day cultures were 70, 54, 25 and 5%, and 55, 42, 25 and 0% with the addition of fulvic acid-Fe (FA-Fe), EDTA-Fe, morphous Fe (am-Fe) and control in due order. The growth rate of young sporophytes of L. religiosa with FA-Fe was about 3 times higher than that with am-Fe. The iron uptake rate of L. religiosa with FA-Fe was about 20 mes higher than that with am-Fe. The high percentage of oogonium formation and the high growth rate with A-Fe will be explained by the high Fe uptake rate with FA-Fe.

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