滋賀県高島郡マキノ町におけるオウレンの生育地調査(2) : 植生と形態及びアルカロイド含量について

概要

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In a sloping area in Makino-cho, Shiga Pref., with a gradient of about 30°, near the foot of mountains, the colonies of Coptis japonica and Coptis quinquefolia thriving on the belt of mixed forests with deciduous trees and Pinus densiflora were surveyed. The botanical composition of the area was like a Fagus crenata forest, but the leaf-canopies were mainly formed of deciduous broad-leaved trees such as Castanea crenata and Quercus serrata, indicating a warm temperate zone forest on a piedmont. Coptis japonica plants are divided into three groups, CJ-1, CJ-2, and CJ-3 according to the ternate compound leaves, and the survey showed that the Coptis japonica plants in the examined area consisted of about 58.6% of var. japonica (CJ-1), 5.9% of var. dissects (CJ-3), and 35.5% of the third group (CJ-2) with twice ternate-like compound leaves. The berberine content in the rhizomes of C. quinquefolia was less than half that of C. japonica.
日本生薬学会の論文
2000-04-20