Related Experiment Video
Updated: May 31, 2026

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
Published on: March 13, 2014
[Dynamic change of active component content in different parts of Prunella vulgaris]
Yuxia Wang1, Jinbao Yin, Qiaosheng Guo
1Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
Objective:
Through determination of the dynamic change of the active component in different parts of Prunella vulgaris at different growth stages, to find the optimal harvest time.
Method:
Total flavonoids content was determined by using the spectrophotometric method, and the content of ursolic acid and oleanolic acid was determined by HPLC. The contents of ash and extract were determined according to the methods in Chinese Pharmacopeia (2005 edition).
Result:
There existed the active components in all parts of P. vulgaris, but the active component contents in different parts of P. vulgaris of at different growth stages, changed very obviously.
Conclusion:
In Yangtze-Huaihai region, the optimal harvest time of Prunella spike best harvest is at the end of June, and Prunellastem at the end of May. All parts of P. vulgaris have medicinal value.
Related Concept Videos
Light Acquisition
Meristems and Plant Growth
Position-effect Variegation
Adaptations that Reduce Water Loss
Transgenic Plants
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
Morphogenesis
