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Citation:

Individual Variation of Gutta-percha Content in Samaras of Eucommia ulmoides

  • Received Date: 2004-06-13
  • Typical tree slelction and random sampling were applied for systematic studies on individual variation of gutta-percha content in samaras of Eucommia ulmoides and the correlations between the characters of samara containing gutta-percha and several macroscopic properties.Integrated extraction was applied for gum content tests.The result showed that characteristics of samara of different clones,its gutta-percha content characters such as the length,width,thickness of samara,the shape index (ratio of length to width),the weight of kilo-seed,gutta-percha content rate in pericarp,seed and gutta-percha content in individual samara,etc,were different significantly.There were 14 clones whose gutta-percha content rates in pericarp were significantly higher than that of the object of reference;15 clones whose gutta-percha content rates in samara were significantly higher than that of the object of reference.The correlations between gutta-percha content rate in pericarp,in samara and main shape characters of samara were not in significant level,but as to gutta-percha content in individual samara,it significantly related with shape characters such as the length,width,thickness and kilo-seed weight,it also significantly related with gutta-percha content rate in pericarp and in samara.
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通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Individual Variation of Gutta-percha Content in Samaras of Eucommia ulmoides

  • 1. Non-timber Research and Development Center of CAF, Zhengzhou450003, Henan, China
  • 2. Central South Forestry University, Zhuzhou412006, Hunan, China

Abstract: Typical tree slelction and random sampling were applied for systematic studies on individual variation of gutta-percha content in samaras of Eucommia ulmoides and the correlations between the characters of samara containing gutta-percha and several macroscopic properties.Integrated extraction was applied for gum content tests.The result showed that characteristics of samara of different clones,its gutta-percha content characters such as the length,width,thickness of samara,the shape index (ratio of length to width),the weight of kilo-seed,gutta-percha content rate in pericarp,seed and gutta-percha content in individual samara,etc,were different significantly.There were 14 clones whose gutta-percha content rates in pericarp were significantly higher than that of the object of reference;15 clones whose gutta-percha content rates in samara were significantly higher than that of the object of reference.The correlations between gutta-percha content rate in pericarp,in samara and main shape characters of samara were not in significant level,but as to gutta-percha content in individual samara,it significantly related with shape characters such as the length,width,thickness and kilo-seed weight,it also significantly related with gutta-percha content rate in pericarp and in samara.

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