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Research Article

Study on the Characteristics of Growth, Yield, and Pharmacological Composition of a new Glycyrrhiza Variety Licorice ‘Wongam (Glycyrrhiza glabra × Glycyrrhiza uralensis)’ in Temperature Gradient Tunnel and Suitable Cultivation Area of Korean

온도구배터널에서 기온상승에 따른 신품종 감초 원감 (Glycyrrhiza glabra × Glycyrrhiza uralensis)의 생육, 수량, 약리성분 특성 및 국내 재배적지에 관한 연구

Yong Il Kim1
,
Jeong Hoon Lee1
,
Tae-Jin An1
,
Eun Song Lee1
,
Woo Tae Park1
,
Young-Guk Kim1
,
Jae Ki Chang1*
김 용일1
,
이 정훈1
,
안 태진1
,
이 은송1
,
박 우태1
,
김 영국1
,
장 재기1*
1Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science
1국립원예특작과학원 약용작물과
* Corresponding Author
28 February 2020. pp. 44-55
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Abstract

Licorice is a semi-desert plant that is difficult to grow under Korean climatic conditions. In order to increase the adaptability of licorice in Korea, the Rural Development Administration (RDA) has recently developed a new variety of licorice, ‘Wongam (Glycyrrhiza glabra × Glycyrrhiza uralensis)’. In this study, the growth, yield, and pharmacological properties of the Wongam variety were investigated in accordance with temperature conditions to evaluate the suitability of the Wongam variety for cultivation. In the temperature gradient tunnel (TGT) atEumseong, Chungbuk, when the temperature was raised to 0°C ‑ 1.5°C higher than the local temperature in 2017, the average height of the Wongam variety was 121.6 cm and the average yield (10a) was 878.1 kg. When the temperature was raised to be 3.0°C ‑ 4.5°C above the local temperature, the average height was 146.5 cm and the average yield (10a) was 1,484.6 kg, anincrease of 69.1%. When the temperature was raised to be 4.5°C ‑ 5.9°C above the local temperature, the average height decreased to 132.5 cm and the yield decreased 8.0% to 1,366.3 kg. Glycyrrhizin content of Wongam roots decreased steadily from 0.98% to 0.87% as the temperature in the TGT increased. The overall average content was 0.91%, which is presumed to be because of a lack of accumulation due to short-term cultivation. The results of this study showed thatthe production of the Wongam variety increased as the temperature was raised to about 4.5°C higher than the local temperature based on the 2017 temperature of Eumseong, Chungbuk, Korea. Therefore, if the current cultivation area formed in Jecheon in Chungbuk is extended to the south central region, the productivity of this cultivar can be greatly improved. In addition, the cultivated years should be extended to enhance glycyrrhizin content up to the 2.5% of the Korean Pharmacopoeia.

Keywords
adaptation
environmental variation
glycyrrhizin
growing environment
medicianl plants
semi-arid plants

감초는 반사막성 식물로 국내 기후조건에서는 재배가 어렵다. 감초의 국내 재배 적응성을 높이기 위하여 최근 농촌진흥청에서 감초 신품종 ‘원감(Wongam, Glycyrrhiza glabra × Glycyrrhiza uralensis)’을 개발하였다. 본 연구에서는 원감 품종의 재배적지 평가를 위하여 온도조건에 따른 생육, 수량, 약리성분 특성을 조사하였다. 충북 음성 소재 온도구배터널에서 2017년 현지기온 대비 0 ‑ 1.5°C 상승시 원감 품종의 평균 초장은 121.6cm, 평균 수량(10a)은 878.1kg이었다. 3.0 ‑ 4.5°C까지 상승시키자 평균 초장은 146.5cm, 평균 수량(10a)은 1,484.6kg으로 69.1%까지 증가하였다. 외기온도 대배 4.5 ‑ 5.9°C까지 상승시키자 평균 초장은 132.5cm로 감소하였고, 수량도 1,366.3kg으로 8.0% 감소하였다. Glycyrrhizin 함량은 터널 내 온도가 올라갈수록 0.98%에서 0.87%로 연속해서 감소하였다. 전체 평균 함량은 0.91%로 단기재배에 따른 축적부족이 원인인 것으로 추정된다. 본 연구결과, 2017년 충북 음성 기준 약 4.5°C까지 온도가 상승할수록 원감 품종의 생산량이 증가하였으므로 현재 충북 제천을 중심으로 형성된 재배지역을 중남부 지역까지 확대할 경우 이 품종의 생산성을 향상시킬 수 있을 것으로 사료된다. 또한 대한약전 기준치인 2.5%까지 글리시리진 함량을 증진시키기 위해서는 재배기간 연장을 고려해 볼 필요가 있다.

키워드
적응
환경변화
글리시리진
생육환경
약용식물
반건조지대 식물
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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :원예과학기술지
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 38
  • No :1
  • Pages :44-55
  • Received Date : 2019-09-16
  • Revised Date : 2019-10-22
  • Accepted Date : 2019-11-18
  • DOI :https://doi.org/10.7235/HORT.20200005
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