Korean Journal of Organic Agriculture (한국유기농업학회지)

Korean Association of Organic Agriculture (한국유기농업학회)
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Effect of Mulching Materials on the Growth and Medicinal Ingredients in Platycodon grandiflorum Radix Organic Cultivation

도라지 유기재배시 피복재료에 따른 생육 및 약용성분 변화

  • 전승호 (경남과학기술대학교 종자실용화연구소) ;
  • 노일래 (경상대학교 농학과(농업생명과학연구원)) ;
  • 김영국 (농촌진흥청 국립원예특작과학원 인삼특작부) ;
  • 조영손 (경남과학기술대학교 농학.한약자원학부)
  • Received : 2016.12.28
  • Accepted : 2017.02.02
  • Published : 2017.02.28
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Abstract

This study was conducted to elucidate the effect of mulching materials on growth characteristics, saponin contents and antioxidant activity of Platycodin grandiflorum Ridix roots for organic farming. Plastic film, sawdust and rice bran were treated by mulching with several different methods after transplanting P. grandiflorum Radix. In root length, when plastic film plot, sawdust plot and rice bran plot were treated, root length was recorded the highest scores (24.0~27.5 cm) in plastic film plot and sawdust plot. Root width was recorded the highest score (30.0 mm) in plastic film plot. Also, the number of fine-roots was the highest in plastic film plot (36.0). Fresh weight, which affects directly yield, was the highest in plastic film plot (130 g/plant). The contents of platycodin D3 and deapioplatycodin D were shown to 111.2 and 48.1 mg/100 g, the highest values were observed in sawdust plot. The total polyphenol and flavonoid contents were recorded the highest scores (11.0 and 8.6 mg/g, respectively) in plastic film plot. In this study we confirmed that there were differences among mulching materials in growth characteristics, saponin contents and antioxident activity of P. grandiflorum roots.

이 연구는 도라지의 유기재배를 위하여 피복물 처리에 따른 도라지 뿌리의 생육특성 및 사포닌, 항산화 활성에 미치는 영향을 구명하고자 실시되었다. 3년근 도라지를 이식 후, 흑색 비닐, 톱밥, 쌀겨 및 무피복구의 뿌리의 길이는 비닐, 톱밥, 무피복구에서 24.0~27.5 cm로 길었으며, 직경에서는 비닐 피복구에서 가장 굵은 30.0 mm로 나타났다. 지근의 수도 비닐 피복구에서 가장 많은 36.0개로 조사되었으며, 수량과 관련성이 있는 생체중은 지근의 수와 직경이 가장 굵었던 비닐 피복구에서 130 g으로 가장 높게 나타났으며 무피복구에서 56 g으로 가장 낮게 나타났다. plantycodin D3와 deapioplatycodin D 함량은 톱밥 피복구에서 가장 높게 나타났으며, 도라지의 총 polyphenol 및 flavonoid 함량은 비닐 피복구에서 각각 11.0, 8.6 mg/g으로 가장 높게 나타났다. Polygalacin D와 ABTS와의 상관관계는 $-0.591^*$로 부의 상관관계를 보였으나, 나머지 성분에서는 상관관계가 없는 것으로 나타났다. 따라서 도라지 유기 재배 시 피복재료에 따른 뿌리의 특성, 사포닌함량과 항산화성분 등의 유의적인 차이가 나타나는 것을 확인할 수 있었다.

Keywords

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