キハダの育種に関する基礎的研究(II) : 樹皮の厚さとベルベリン含有率の変異

概要

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The thickness of bark and the content of berberine in the inner bark of P. amurense were investigated in five stands of various ages from 5 to 50 years old. The results obtained in this study are as follows: The thickness of inner and outer barks varied according to habitats and individual trees. Generally the bark thickness tended to increase with increasing breast heigh diameter. The content of berberine in the inner bark increased to the highest level in July. In one tree, the content of berberine was highest in the root bark and decreased with the increase of stem height. The content of berberine varied markedly according to habitats and individual trees. In regard to the relation ship between bark thickness and berberine contents, there was a tendency for the content of berberine to increase with the increase of bark thickness.
1992-05-31