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[Study on optimal harvest time of Erigeron breviscapus]
Sheng-chao Yang1, Xue-feng Zhang, Li-mei Zhang
1Institute of Chinese Medicinal Materials of Yunnan Agricultural, University Yunnan Provincial Center of Chinese Medicinal Materials' Good Agriculture Practice Technology, Kunming 650201, China.
Objective:
To ascertain the optimal harvest time of Erigeron breviscapus.
Method:
The dry matter weight accumulation of different organs in growth process and contents of scutellarin and coffeic acid ester in whole plant of E. breviscapus were determined.
Result:
The number of leaves per plant, the dried weight of single leaf and dry matter weight of whole plant and different organs reached the highest after seedling 130-140 d. The content of scutellarin gradually decreased with growth period, and sharply decreased after seedling 140 d. The content of coffeic acid ester varied irregularly with growth period.
Conclusion:
The optimal harvest time of E. breviscapus is in early bloom period after seedling 130 d.
