北海道産生薬の生薬植物学的研究(第3報) : エゾエンゴサクの栽培(その1) : 発芽と初年度植物について

概要

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Corydalis ambigua CHAM, et SCHLECHT. (Papaveraceae), [Japanese name "Ezoengosaku"] is an aperennial herb which grows wild in Hokkaido and the northeastern part of Honshu in Japan. The tuber of the plant may be considered as a substitute for "Corydalis Tuber" (元胡・延胡索) which is used in China and in Korea as an anodyne and antispasmodic agent. But C. ambigua tuber is today used only as a folk medicine in Hokkaido. Cultivation of genus Corydalis plants from their seeds has not been studied, though their alkaloid constituents and pharmacological studies have been reported. We conducted cultivation of C. ambigua plants from seeds and obtained the following results. Seed germination began at the end of April. For 45 days after germination, the plant remained in their infant plant stage having only one leaf cotyledon. Then the terrestrial part (cotyledon) withered, and the plant seemed to enter a resting period in early June. The rate of seed germination was about 50-60%, which, however, lowered on storage. An embryo required 8-10 months after fructification to ripe. The first age tuber resulted from the thickening growth of the apical part of hypocotyl, and grew to 2.5-5.0 mm in diameter and 30-35 mg in fresh weight in early June. We also studied the internal structure of seeds and first age plants.
日本生薬学会の論文
1985-09-20