一年生喜树生长规律及叶片中喜树碱含量季节性变化研究  

Study on The Growth Law and the Seasonal Variation of Camptothecin Content in Leaves of Annual Camptotheca acuminata

作　　者：刘波 刘曦子 苏禄晖 朱丽红 杨意[3] 

机构地区：[1]上海市医药学校,上海200135 [2]南京大学金陵学院化学与生命科学学院,江苏南京210037 [3]上海市浦东新区公路管理署,上海200129

出　　处：《林业科技》2018年第1期13-16,50,共5页Forestry Science & Technology

基　　金：上海市医药学校内涵建设课题

摘　　要：对1年生喜树的生长规律、嫩叶和成熟叶中喜树碱(CPT)含量的季节变化、不同叶龄叶片喜树碱含量变化进行研究。结果表明,1年生喜树高生长、粗生长及生物量均呈S型曲线变化,生长速率最快出现在6月中旬~7月中旬;无论是嫩叶还是成熟叶,喜树碱含量均为单峰曲线,均在7月中旬含量达到最大值,在整个生长期内,嫩叶中喜树碱含量均高于同期成熟叶中的喜树碱含量;喜树叶片中喜树碱(CPT)含量与叶片的叶龄呈负相关,即叶龄越小,叶片中的喜树碱含量越高;叶龄越大,叶片中的喜树碱含量越低,叶龄为5天的嫩叶,其喜树碱含量最高。Camptotheca acuminata Decne. was an important medicinal tree with anti-tumor activity in China. In this paper, Dynamic growth changes of height, basal diameter and biomass of annual Camptotheca acuminata were measured. CPT content in young leaves, mature leaves and different ages of leaves of C.acuminata were determined. The results showed that the growth of height, basal diameter and biomass of annual Camptotheca acuminata showed a curve of S, and the fastest growth rate appeared in middle June to middle July. CPT content was a single peak curve in both young and mature leaves, and reached the maximum value in the middle of July. CPT content in young leaves was higher than that in mature leaves at the same period. CPT content in leaves was negatively correlated with age. That was the age was small, the CPT content in the leaves was higher, the greater the leaf age, the CPT content in the leaves of the lower.CPT content was the highest in young leaves for 5 days.

关 键 词：喜树 生长 喜树碱 含量 季节变化 叶龄 

分 类 号：S792.99[农业科学—林木遗传育种] S718.43[农业科学—林学]