检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]东北林业大学生命科学学院
出 处:《林产化学与工业》2007年第2期62-66,共5页Chemistry and Industry of Forest Products
基 金:国家自然科学基金资助项目(30271045);黑龙江省杰出青年基金项目(JC-02-11)
摘 要:对黄檗主要药用成分小檗碱、掌叶防己碱和药根碱在成树、幼树中的分布和季节变化进行了系统的研究。结果表明:黄檗树干韧皮部中3种生物碱含量均随着树干位置增高而降低,成树在地面至1.5m高度内随位置增高而急剧下降,超过1.5m后趋于平稳,而幼树随位置增高近线性下降,幼树近地面20cm茎段韧皮部中的小檗碱含量相当于成树;黄檗成树韧皮部中3种生物碱含量的季节变化不明显,而生长2年的黄檗幼树韧皮部中则有明显的季节变化,根是7月含量较高,茎是6月含量较高。Seasonal variation and distribution of principal medicinal constituents, namely berberine, palmatine and jatrorrhizine in mature trees and saplings of amur corktree (Phellodendron amurense Rupr. ) were studied. In mature trees, alkaloids were decreased from base to the apex in the phloem, sharply dropped down at the height of 1.5 m from the base, then turned steady above the height of 1.5 m ; whereas in saplings, alkaloids levels declined linearly with the increased height from the base. The alkaloids content at the height of 20 cm from the base was equivalent to that at the height of 1.5 m in mature tree. In contrast to an unobvious seasonal variation of alkaloids content in mature tree, alkaloids content in two-year saplings changed remarkably, the highest contents were showed in July in roots and in June in the stem.
分 类 号:TQ91[化学工程] S792.31[农业科学—林木遗传育种]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.95