[栽培铁皮石斛多糖含量的定量变异]
[Quantitive variation of polysaccharides content in cultivated Dendrobium candidum].
作者信息
Zhu Yan, Si Jinping, Guo Baolin, He Bowei, Zhang Ailian
机构信息
Centre for Research and Development of Natural Medicines of Zhejiang Forestry University, Lin'an 311300, China.
出版信息
Zhongguo Zhong Yao Za Zhi. 2010 Feb;35(4):427-30.
OBJECTIVE
To reveal the variation content of polysaccharides in cultivated Dendrobium candidum and the relationship between germplasms, harvesting and polysaccharides content for the breeding of quality of D. candidium.
METHOD
The morphological characteristics were recorded when 33 samples were collected. The content of polysaccharides was determined by phenol-sulphuric acid method.
RESULT
The average content of polysaccharides in 2-year-old samples was 34.47% (25.63%-41.65%). The polysaccharides content of samples were significantly different among germplasms and physiological ages.
CONCLUSION
The polysaccharides content of cultivated D. candidum is higher than that of wild materials. Germplasms and physiological age impact on the polysaccharides content significantly. D. candidum breeding and the control of harvesting can increase polysaccharides content.
目的
揭示栽培铁皮石斛多糖含量的变异情况以及种质、采收与多糖含量之间的关系，为铁皮石斛品质育种提供依据。
方法
采集33份样品时记录其形态特征。采用苯酚-硫酸法测定多糖含量。
结果
两年生样品中多糖平均含量为34.47%（25.63%-41.65%）。不同种质和生理年龄的样品多糖含量存在显著差异。
结论
栽培铁皮石斛的多糖含量高于野生材料。种质和生理年龄对多糖含量有显著影响。铁皮石斛育种及采收控制可提高多糖含量。
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