Background: Angelica gigas Nakai is a perennial herb belonging to the family Umbelliferae. Its roots are utilized in traditional medicine. The aim of this study was to increase the yield of and the content of two indicator components (decursin and decursinol angelate) in A. gigas Nakai.
Methods and Results: The roots of A. gigas Nakai were harvested 4-times from late August to late October in 2017. Two agents (trace element-TE, and plant hormone-HM) were applied 4 times at intervals of 2 weeks. The content of the two indicator components were analyzed by high performance liquid chromatography. The HM treatment showed the greatest increase in underground part yield and root diameter. The content of the two indicator components in the control (non-treatment) group was the highest in the underground part, but was higher in the aerial parts in the agent treatment group. After treatment with the agents, the content of the indicator components tended to decrease in the underground part. However, the total content of the indicator components in the two agent treatment groups exceeded the level of 6% set by the Korean Pharmacopoeia.
Conclusions: The highest underground part yield was found in the HM treatment group, while the highest content of decursin and decursinol angelate were found in the control group. This study provides basic information for yield improvement in A. gigas.

ABSTRACT
 서 언
 재료 및 방법
  1. 실험재료
  2. 지표성분 분석
  3. 통계분석
 결과 및 고찰
  1. 첨가제 처리에 따른 생육특성
  2. 첨가제 처리에 따른 지표 성분 함량 변이
 REFERENCES

• 이상훈(농촌진흥청 국립원예특작과학원 인삼특작부) | Sang Hoon Lee (Department of Herbal Crop Research, NIHHS, RDA)
• 윤형묵(한국농수산대학 특용작물학과) | Hyeong Muk Yun (Department of Medicinal and Industrial Crops, Korean National Collage of Agriculture and Fisheries)
• 구성철(농촌진흥청 국립원예특작과학원 인삼특작부) | Sung Cheol Koo (Department of Herbal Crop Research, NIHHS, RDA)
• 이우문(농촌진흥청 국립원예특작과학원 인삼특작부) | Woo Moon Lee (Department of Herbal Crop Research, NIHHS, RDA)
• 장재기(농촌진흥청 국립원예특작과학원 인삼특작부) | Jae Ki Chang (Department of Herbal Crop Research, NIHHS, RDA)
• 구현정(한국농수산대학 특용작물학과) | Hyun Jeong Koo (Department of Medicinal and Industrial Crops, Korean National Collage of Agriculture and Fisheries)
• 장광진(한국농수산대학 특용작물학과) | Kwang Jin Chang (Department of Medicinal and Industrial Crops, Korean National Collage of Agriculture and Fisheries)
• 김연복(한국농수산대학 특용작물학과) | Yeon Bok Kim (Department of Medicinal and Industrial Crops, Korean National Collage of Agriculture and Fisheries) Corresponding author