黄精根状茎形态与内部构造相关性初探

Preliminary Study on the Correlation between Morphology and Internal Structure of Rhizome about Polygonatum Sibiricum

采用定期定点野外观察、徒手切片与显微观察的方法,探索黄精生长发育与根状茎形成的相关性以及不同形态根状茎的内部构造。通过观察,黄精根状茎一年生长的节段称为年生长区,包括伸展段和转换段,不同时间段内黄精生长速度不同。结果发现,不同位置根状茎内部构造维管束的走向、数目、粗细有显著区别。探明了黄精地上部分的生长习性与根状茎膨大的相关性以及不同部位根状茎的内部构造,为黄精的栽培与鉴别提供参考。

The methods of regular field observation,freehand sections and microscopic observation were adopted to explore the correlation between the development of P.sibiricumand the formation if its rhizome,as well as the internal structure of rhizomes in different morphology.Through experiment and observation,the annual growth area of the rhizome is called the annual Growth Area,including the Extension Section and Conversion Section,the growth rate of P.sibiricum was different at different intervals.There were significant differences in the direction,quantity and thickness of the Vascular Bundles in different sections of rhizome.The correlation between the growth habit of the top part and rhizome enlargement of the P.sibiricum,as well as the internal structure of different parts of the rhizome were proved,providing reference for the cultivation and identification of P.sibiricum.