薬用植物の植物社会学的研究(第1報) : 植物社会におけるカブダチジャノヒゲの現存量(乾物重,糖含量の季節変化)について

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Ophiopogon japonicus var. caespitosus in the forest floor plant of Ardisio-Castanopsion is one of the original plants of a Chinese crude drug, BAKUMONDO (麦門冬). Biomass (dry weight, sugar content) of O. japonicus var. caespitosus and Liriope platyphylla was measured on Carpinus laxiflora community (Stand II), Quercus glauca community (Stand III) and Quercus myrsinaefolia community (Stand IV), and that of O. japonicus on grassland in Ikeda town of Gifu prefecture. The relative illumination of sunlight at Stand II measured gave a low value in summer and high in autumn to spring. However, it showed low throughout a year at Stand IV. Water-soluble total sugar content in the reserved substance of the subterranean part of O. japonicus var. caespitosus at Stand II and Stand III and O. japonicus at Stand V reached maximum in spring and minimum in summer to autumn. However, the free sugar of these parts showed a low content throughout a year. It is, therefore, recognized that, the succession from Stand II to Stand IV through Stand III getting closer to potential natural vegetation, the relative illumination at the forest floor gets lower and the annual changing patterns of biomass (g/m^2) of O. japonicus var. caespitosus and L. platyphylla gets lower, too. The annual change of biomass of O. japonicus at grassland showed that it occupies an understory of the community possessing summer-green plants as the overstory.
日本生薬学会の論文
1977-06-20