Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Microbubbles Increase Glucosinolate Contents of Watercress (Nasturtium officinale R. Br.) Grown in Hydroponic Cultivation

마이크로버블을 이용한 수경재배 물냉이의 글루코시놀레이트 함량 증대

  • Bok, Gwonjeong (Department of Horticulture, Chungnam National University) ;
  • Choi, Jaeyun (Department of Horticulture, Chungnam National University) ;
  • Lee, Hyunjoo (Department of Horticulture, Chungnam National University) ;
  • Lee, Kwangya (Agricutural Drought Mitigation Center, Korea Rural Corporation (KRC)) ;
  • Park, Jongseok (Department of Horticulture, Chungnam National University)
  • 복권정 (충남대학교 농업생명과학대학 원예학과) ;
  • 최재윤 (충남대학교 농업생명과학대학 원예학과) ;
  • 이현주 (충남대학교 농업생명과학대학 원예학과) ;
  • 이광야 (한국농어촌공사 재난안전처 농업가뭄센터) ;
  • 박종석 (충남대학교 농업생명과학대학 원예학과)
  • Received : 2019.04.10
  • Accepted : 2019.04.16
  • Published : 2019.04.30
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Abstract

The effects of microbubbles on glucosinolate accumulation and growth of watercress (Nasturtium officinale R. Br.) were investigated. Watercress plant at the 4th mature leaf stage (2 weeks old) were exposed to microbubbles or non-microbubbles generated in an Otsuka-house nutrient solution for 3 weeks in a controlled environment culture room. Stem length of the watercress grown under the microbubbles was 41% shorter than that of the non-microbubbles, showing significantly different. However, shoot fresh and dry weights, root length, leaf length, leaf width, SPAD, and quentum yield of the watercress were not significantly different between treatments. Glucoiberin, glucobrassicin, gluconapin, gluconasturtiin of the watercress grown under microbubbles, excepted for 4-methoxyglucobrassicin, were significantly higher than those of the watercress grown in non-microbubbles. In addition, watercress grown under microbubbles for 3 weeks contained 85% (${\mu}mol/g$ DW) and 65% (${\mu}mol/plant$) more total glucosinolate, respectively. Results indicated that microbubbles generated in a deep flow technique hydroponics system could increase the accumulation of glucosinolate without growth reduction.

본 실험은 물냉이 수경재배 시 양액 내 발생 시킨 마이크로버블이 물냉이의 생육과 glucosinolate 축적에 미치는 영향을 알아보기 위해 수행되었다. 본엽 4매의 물냉이 유묘(파종 2주 후)를 마이크로 버블과 비-마이크로버블을 발생시킨 오오츠카 배양액을 이용하여 환경조절룸에서 3주간 재배하였다. 물냉이 초장은 대조구처리가 마이크로버블처리보다 41% 증가하였으며, 유의적으로 높게 나타났다. 그러나, 지상부 생체중과 건물중, 근장, 엽장, 엽폭, SPAD, 량자수율값은 두처리간 유의적 차이는 나타나지 않았다. Glucosinolate 함량을 분석 결과 4-methoxygluco-brassicin을 제외한 glucoiberin, glucobrassicin, gluconapin, gluconasturtiin의 경우 마이크로버블 처리구가 대조구보다 유의적으로 높게 나타났으며, 물냉이 한주 당 총 glucosinolate 함량은 마이크로버블 처리구가 대조구 보다 $85%({\mu}mol/g\;DW)$와 $65%({\mu}mol/plant)$ 더 높게 나타났다. 본 연구 결과는 담액재배시 양액 내 마이크로버블이 물냉이의 glucosinolate 함량을 증가시킬 수 있을 것으로 나타났다.

Keywords

References

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