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Position: Home > Articles > Effect of planting density on plant growth and camptothecin content of Camptotheca acuminata seedlings Journal of Forestry Research 2005,16 (2)

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

作者：

Huanyong Wei;Yang Wang;Zhenyue Wang;Xiufeng Ya

单位：

College of Life Sciences, Northeast Forestry University, Harbin, P.R. China;College of Life Sciences, Northeast Forestry University, Harbin, P.R. China.;College of pharmacy, Heilongjiang University of Chinese Medicine, Harbin, P.R. China;College of Life Sciences, Northeast Forestry University, Harbin, P.R. Chin

关键词：

planting density;cpt;25;plants;seedlings;acuminat

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.

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

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