Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Soil Physico-Chemistry and Saponins Content of Platycodon grandiflorum Radix Cultured from Different Sites in Gyeongnam Province

경남지방에서 도라지 재배지역별 토양이화학적 특성과 사포닌 함량

  • Lee, Byung Jin (Department of Agronomy & Medicinal Plant Resourses, Gyeongnam National University of Science and Technology) ;
  • Jeon, Seung Ho (Research Center for Seed Utilization of Gyeongnam National University of Science and Technology) ;
  • Lee, Shin Woo (Department of Agronomy & Medicinal Plant Resourses, Gyeongnam National University of Science and Technology) ;
  • Chun, Hyun Sik (Department of Agronomy & Medicinal Plant Resourses, Gyeongnam National University of Science and Technology) ;
  • Cho, Young Son (Department of Agronomy & Medicinal Plant Resourses, Gyeongnam National University of Science and Technology)
  • 이병진 (경남과학기술대학교 농학한약자원학부) ;
  • 전승호 (경남과학기술대학교 종자실용화 연구소) ;
  • 이신우 (경남과학기술대학교 농학한약자원학부) ;
  • 전현식 (경남과학기술대학교 농학한약자원학부) ;
  • 조영손 (경남과학기술대학교 농학한약자원학부)
  • Received : 2014.09.17
  • Accepted : 2014.11.26
  • Published : 2014.12.30
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Abstract

This study was carried out in order to survey the soil physico-chemical, morphology and content of saponins of 5 year-old Platycodon grandiflorum radix from different areas in Gyeongnam. Soil physical properties was showed 1.01-1.29 of bulk density of soil and soil hardness was increased with increasing soil depth, especially below the 30 cm, however it was maintained or small increased below the 40 cm. T-N and OM contents of top soil were highest at Geochang as 0.27% and 56.9 g/kg, respectively, compared to other areas. The root length was longer at Kimhea and Geochang as 33.8 and 33.7 cm, respectively, and fresh weight was heavy at Geochang as 208.5 g. The contents of saponin of P. grandiflorum radix was higher in fine root compare to main root. By region, content of saponins of P. grandiflorum radix were higher at Hapcheon than other area. Mg content was highly negatively correlated at p < 0.01 with platycodin D3, deapioplatycodin D, platycodin D, and deapioplatycodin D ($-0.499^{**}$, $-0.433^{**}$, $-0.421^{**}$, $-0.511^{**}$ respectively). These results suggest that no-fertilized Mg effected on the improvement of saponin contents in P. grandiflorum.

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References

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