白车轴草挥发性成分植物生理学与化学分类学特征研究

[目的]解析白车轴草挥发性成分的植物生理学与化学分类学特征。[方法]分别采集、提取白车轴草开花期的叶柄、花蕾、盛花与衰花精油,应用GC/MS/DS技术对其挥发性成分进行分析,应用植物化学成分规范分析法,以基本成分与特征成分表征植物挥发性成分的生理学与化学分类学特征。[结果]通过分析,确定白车轴草精油基本成分共8种,特征成分共83种,分属于4个不同部位或花期。通过提出指纹成分与重叠成分的概念,对特征成分进行细分可知,指纹成分是某个部位或花期独有的成分,重叠成分则是2个或多个(但不是全部)部位或花期共有的特征成分。对重叠成分的进一步分析表明,开花期的白车轴草叶柄、花蕾、盛花与衰花之间既有区分,又有联系。[结论]该研究为探寻白车轴草的生长规律提供科学依据。

Investigation of Essential or Non-essential Character of Some Hardly Known Trace Elements for Plants

The concentration distribution of essential and non-essential micro-elements of the tissues of healthy organisms shows significant difference. This fact can be used for clarification of the biological role of hardly known trace elements, as well, proving the essential or non-essential character. In case of essential elements the concentration range is rather narrow, the distribution is normal. In case of non-essential elements the interval is wide, the concentration-distribution is log-normal. Measurements and mathematical calculations were carried out for determination of the concentrations and concentration-distributions of some micro-elements, trying to clarify the essentiality or non-essential character of the investigated elements from point of view of plant physiology. Based on the measurements for radish Li and Ni seem to be non-essential trace elements, however in case of Sr the distribution curve suggests an essential character, because the concentration range is not wide.