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KMID : 1098420160240020110
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Korean Journal of Medicinal Crop Science
2016 Volume.24 No. 2 p.110 ~ p.114
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Variation of Yield and Loganin Content According to Harvesting Stage of Dipsacus asperoides Wall
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An Chan-Hoon
Kim Young-Guk
Ahn Tae-Jin
Hur Mok
Lee Jeong-Hoon
Lee Yun-Ji
Cha Sun-Woo
Song Beom-Heon
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Abstract
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Background: This study aimed to investigate the effect of harvest time on the growth, yield characteristics and loganin content in Dipsacus asperoides Wall.
Methods and Results: Dipsacus asperoides seedlings were planted within a nursery environment in early May 2015 and harvested in early, middle and late October 2015, and early November 2015. Harvest time did not result significant differences in the plant height, stem diameter, branch length, leaf width and aboveground dry weight moreover, no significant differences were observed in root length, number of roots and root diameter. However, the diameter of lateral roots was greater in the harvests from the late October and period thereafter. The highest values of root dry weight and yield were recorded in early November. Specifically, the yield significantly increased from 205 ㎏/10 a (index: 100) in early October to 358 ㎏/10 a (index: 175) in early November, in terms of root part weight. Loganin contents of D. asperoides differed significantly among harvest times raging from 0.0766% in early October to 0.1704% in late November, thereby showing an increasing trend in later harvest times.
Conclusions: These results suggest that the optimum harvest time for D. asperoides is early November, when the yield is the highest. Harvest time significantly affected loganin contents, which constantly increased from early October until early November.
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KEYWORD
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Dipsacus asperoides, Content, Growth Characteristics, Root Yield
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