Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Appropriateness Evaluation of Plug Seedling Cultivation for Replanting of Rehmannia glutinosa (Gaertn.) Libosch. ex Steud

보식용 지황의 플러그 육묘 재배를 위한 적정성 평가

  • Lee, Sang Hoon (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Kang, Seung Uk (Department of Medicinal and Industrial Crops, Korean National College of Agriculture and Fisheries) ;
  • Lee, So Hee (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Koo, Sung Cheol (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Hur, Mok (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Jin, Mei Lan (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Lee, Woo Moon (Department of Herbal Crop Research, NIHHS, RDA) ;
  • Park, Min Su (Department of Biology Education, Kongju National University) ;
  • Kim, Yeon Bok (Department of Medicinal and Industrial Crops, Korean National College of Agriculture and Fisheries) ;
  • Han, Jong Won (Department of Herbal Crop Research, NIHHS, RDA)
  • 이상훈 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 강승욱 (한국농수산대학 특용작물학과) ;
  • 이소희 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 구성철 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 허목 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 김미란 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 이우문 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 박민수 (공주대학교 생물교육학과) ;
  • 김연복 (한국농수산대학 특용작물학과) ;
  • 한종원 (농촌진흥청 국립원예특작과학원 인삼특작부)
  • Received : 2019.03.27
  • Accepted : 2019.05.13
  • Published : 2019.06.30
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Abstract

Background: Rehmannia glutinosa is a perennial herb belonging to the family Scrophulariaceae and is used in traditional oriental medicine. This study was conducted to evaluate the appropriateness of plug-seedling cultivation for replanting of R. glutinosa. Methods and Results: The seed rhizomes of Rehmannia glutinosa 'Jihwang 1' were harvested in the middle of March, 2018. Direct seedling cultivation was conducted after air curing for 3 days. The seedlings for transplanting were cultivated for 30 (30D), 45 (45D), and 60 days (60D). The mat formation rates of the 30D, 45D and 60D treatment seedling were 81.3%, 100%, and 100%, respectively. Of the tree treatment groups, flowering occurred only in the 45D and 60D treatment groups, and their flowering rates were $7.3{\pm}3.06%$ and $13.3{\pm}1.15%$, respectively. The agronomic characteristics and active components of the three treatment groups were evaluated in comparison with the DS1 (directly seeded group, control) and DS2 (directly seeded group, replanting) groups. As a result, the leaf length and leaf width of the 30D seedlings were higher than other treatment groups, but the number of leaves per plant was statistically the same. In addition, root diameter and yield of the 30D seedling were statistically the same as DS1. Moreover the catalpol contents of 30D, 45D, DS1 and DS2 group seedlings were 2.23%, 1.86%, 2.50% and 2.08%, respectively. Conclusions: Taken together, these findings suggest it is feasible to use the plug-seedling cultivation method for replanting of R. glutinosa. seedlings. However, further evaluation of the economic aspect is needed.

Keywords

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Fig. 1. HPLC chromatograms of catalpol (A) and sample (B) from R. glutinosa.

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Fig. 2. Mat formation of different seedling periods in R.glutinosa (left; 30 days, right; 45 days).

Table 1. LC analyisis condition of catalpol in R. glutinosa.

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Table 2. Mat formation rate and flowering rate in R. glutinosa. seedling.

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Table 3. Aerial part growth characteristics of R. glutinosa.

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Table 4. Underground part growth characteristics of R. glutinosa.

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Table 5. Catalpol content of R. glutinosa.

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