摘要
为了弄清不同变异类型杜仲叶片含胶特性的变异规律,同时为了给杜仲胶优良资源的选择和有效利用提供理论依据,采用选择典型样株和随机取样的方法和含胶率的测定采用杜仲胶综合提取法进行了研究.结果表明:不同变异类型杜仲叶片的形态特征和含胶性状表现出不同的特点,其中4个变异类型叶长存在显著差异,而叶宽、叶形指数、叶面积、单叶质量、叶片含胶率和单叶含胶量的差异都达到极显著水平;叶片含胶率和单叶含胶量都是浅纵裂型最高,深纵裂型最低.
<Abstrcat>This study was conducted for fully understanding of variations of gutta-percha content characters in leaves from different variance-types, which aims to provide theoretical guidance for selections of valuable resources and effective utilization of Eucommia ulmoides Oliv. Typical sample-tree selection and random selection were applied and integrated gum extraction was used for the gutta-percha content rate test in this study. The results showed that characters of the leaf configuration and its gutta-percha content were remarkably different among variance-types. Differences of the leaf length were observed among four variance-types while differences of some other indexes reached a significant level, such as the leaf width, index of leaf shape, the leaf size, single leaf weight, gum content rate and single leaf gum content, etc. Among variances, highest gutta-percha content rate and highest single leaf gum content were from leaves of forma crackle while lowest from that of forma split.
出处
《中南林学院学报》
CSCD
北大核心
2005年第3期18-20,共3页
Journal of Central South Forestry University
基金
国家高技术项目"杜仲良种快繁及高产栽培技术研究"(99-15)的部分研究内容.
关键词
经济林
杜仲叶
变异类型
含胶率
变异规律
non-timber forests
Eucommia ulmoides leaf
variance-type
gutta-percha content rate
variation
