北海道産生薬の生薬植物学的研究(第8報) : エゾエンゴサクの栽培(その4) 3年度植物から6年度植物について

概要

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The growth, development and morphological characteristics of 3rd-6th age plants of Corydalis ambigua (Papaveraceae) were studied. The experimental data obtained on the terrestial portions and tubers indicated that C. ambigua requires 5 or 6 years to reach maturity. Taking various factors into consideration, we consider that, for the cultivation and preparation of medicinal-use tubers, the 5th age plant is the best for harvesting. We found, twin tubers in some of the cultivated plants, but this twin character was not shown to have been fixed hereditarily. As regards the internal structure of ripe tubers, the upper part exhibited a stem-structure and the lower part a root-structure. In the middle part was shown the vascular bundle changing from collateral form to radial form. We concluded that the tubers had been derived from the secondary thickening growth of a part of which was very similar to the hypocotyl of the infant (1st age) plant.
日本生薬学会の論文
1988-09-20