[Study on optimal harvest time of Erigeron breviscapus].
OBJECTIVE
To ascertain the optimal harvest time of Erigeron breviscapus.


METHODS
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.


RESULTS
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.


CONCLUSIONS
The optimal harvest time of E. breviscapus is in early bloom period after seedling 130 d.
Yang
Sheng-chao
SC
Institute of Chinese Medicinal Materials of Yunnan Agricultural, University Yunnan Provincial Center of Chinese Medicinal Materials' Good Agriculture Practice Technology, Kunming 650201, China.
Zhang
Xue-feng
XF
Zhang
Li-mei
LM
Liu
Li-xian
LX
Yang
Yong-jian
YJ
Xiao
Feng-hui
FH
D047310:Apigenin / Q000032:analysis; D018533:Biomass; D049919:Erigeron / Q000737:chemistry / Q000254:growth & development*; D051639:Gardening; D005965:Glucuronates / Q000032:analysis
D005965:Glucuronates; C484876:scutellarin; D047310:Apigenin