Biologically active substances from the leaves of Platycarya strobilacea SIEB. Et ZUCC. (PART III)

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  • ノグルミ（Platycarya strobilacea SIEB.et ZUCC.）の葉に含まれる生物活性物質（その3）
  • ノグルミ(Platycarya strobilacea SIEB.et ZUCC.)の葉に含まれる生物活性物質-3-
  • ノグルミ Platycarya strobilacea SIEB et ZUC

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Abstract

The substance V, isolated as a plant growth inhibitor from the leaves of Platycarya strobilacea SIEB. et ZUCC., was identified as p-coumaric acid methyl ester. The inhibiting activities of the substances I, II, III and V were tested against germination of rice, wheat, and lettuce. The substances I, II, and III did not inhibit the germination of rice and wheat, even at 2,000 μg/ml and 150 μg/disk, respectively. Against lettuce, I and II inhibited the germination completely at a dose of 3.0 μg/disk, but III showed only 70% inhibition even at 150 μg/disk. The substance V completely inhibited the germination of rice at 2,000 μg/ml and lettuce at 105 μg/disk, while it showed no inhibition against the germination of wheat at 150 μg/disk. Against the germination of lettuce, V showed inhibition as strong as coumarin.

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