杜仲果实含胶特性的个体变异规律

采用选择典型样株和随机取样的方法,对杜仲果实含胶特性的个体变异规律及其与若干宏观性状的相关性进行了系统研究。结果表明,无性系间的果长、果宽、果厚、果形指数、果实千粒质量、果皮含胶率、果实含胶率和单果含胶量都存在极显著差异。在供试的35个无性系中,果皮含胶率极显著高于对照的有14个无性系,果实含胶率极显著高于对照的有15个无性系;无性系果实含胶率和果皮含胶率与果实主要形态性状的相关性均未达到显著水平,而单果含胶量则与果长、果宽、果厚、果实千粒质量的相关性均达到了极显著水平,与果皮含胶率和果实含胶率的相关性也达到了极显著水平。

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

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.