西南林业大学学报2017，Vol.37Issue(2)：69-73,5.DOI:10.11929/j.issn.2095-1914.2017.02.011
云南红豆杉幼树不同径级枝干生物量与紫杉烷含量特征分析
Characteristics Analysis on Different Diameter Branches & Stems Biomass and Taxanes Contents of Taxus yunnanensis Saplings
摘要
Abstract
With dividing the branches & stems diameter (φ) of 4.5-year old Taxus yunnanensis sample trees into 9 grades,the biomass characteristics of bark and xylem in different grades were analyzed,and taxanes contents of different diameter samples,such as 10-DAB,baccatin-Ⅲ,7-xyl-taxol,10-deacet-taxol,cephalomannine,and taxol,were tested and contrasted.The results indicated that there was a significant decline for the proportion of samples' bark when φ ＞ 0.5 cm,and when φ ＞ 0.8 cm,there was the significant increase for the diameter of sampies' xylem.When 0.3 cm ＜ φ ＜ 1.49 cm and φ ＞ 4.00 cm,the ratio of dry weights of samples' bark and xylem decreased significantly with the increase of the diameter.There was a certain amount of taxol and other taxanes in the stem xylem of the saplings.And φ =0.3 cm,the branch diameter of the tree species,which was the significant node that relates to changes of taxanes contents of the branches.We thus suggest that the small branches with leaves (φ ＜ 0.3 cm) be used as main target and pricing basis in the cultivation,harvesting,and the purchase of the branches and leaves of medicinal raw material forests of T.yunnanensis.关键词
云南红豆杉/枝叶/径级/生物量/紫杉烷Key words
Taxus yunnanensis/branches & leaves/diameter grades/biomass/taxanes分类
农业科技引用本文复制引用
王磊,张劲峰,温霜,李江,冯倩,方俊..云南红豆杉幼树不同径级枝干生物量与紫杉烷含量特征分析[J].西南林业大学学报,2017,37(2):69-73,5.基金项目
国际热带木材组织项目[PD 501/08 Rev.1(F)]资助 （F）
中央财政林业科技跨区域重点推广示范项目(2013TK76)资助. （2013TK76）
