Effect of planting density on plant growth and camptothecin content of Camptotheca acuminata seedlings

查看全文 作　　者：WEIHuan-[1]yong;[1]WANGYang;WANGZhen-[2]yue;YANXiu-[1]feng

机构地区：[1]CollegeofLifeSciences,NortheastForestryUniversityHarbin150040,P.R.China;[2]Collegeofpharmacy,HeilongjiangUniversityofChineseMedicine,Harbin150040,P.R.China

出　　处：《Journal of Forestry Research》索引2005年第16卷第2期,共3页

基　　金：This paper was supported by the National Natural Science Foundation of China (No.3970086) and Heilongjiang Province Foundation for Distinguished Youth Scholars (JC-02-11) 摘　　要：C. acuminata seedlings cultivated in greenhouse were transplanted into the fields with 5 designed planting densities (11, 16, 25,44 and 100 plants·m^-2) in May of 2004 and were harvested in the middle of September of 2004. The seedling growth indexes including plant height and crown width, biomass allocation, camptothecin (CPT) content and CPT yield of different organs (young leaf, old leaf, stem,and root) were studied. For the 5 selected planting densities, the plant biomass, height, crown width, and total leaf area of C. acuminata seedlings all showed highest values at the planting density of 25 plants ·m^-2. CPT content in young leaves was higher than that in other organs of seedlings and presented an obvious change with the variation of planting densities and with the highest value at density of 100plants·m-2, while for other organs no significant variation in CPT content was found with change of planting density. The accumulation of CPT was enhanced significantly at the planting density of 25 plants·m^-2. It is concluded that for the purpose to get raw materials with more CPT from C. acuminata, the optimal planting density of C. acuminata seedlings should be designed as 25 plants·m^-2. 关键词：喜树喜树碱含量栽培密度幼苗生物量

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Effect of planting density on plant growth and camptothecin content of Camptotheca acuminata seedlings

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