Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Effect of P Levels in Nutrient solution on the Propagation of Arvuscular Mycorrhizal Funfi in Aeroponics

분무경재배에 의한 arbuscular 균근균 증식에서 양액내 인산농도의 영향

  • Kim, Young-Ju (Division of Environmental and Agricultural Science, Sunchon National University) ;
  • Jin, Seo-Yeong (Division of Environmental and Agricultural Science, Sunchon National University) ;
  • Cho, Ja-Yong (Department of Medicinal Resources and Hrticulture Development, Namdo Provincial College of Jeonnam) ;
  • Kim, Kil-Yong (Division of Applied and Bioscience and Biotechnology College of Agricultural Life Science, Chonnam National University) ;
  • Cha, Gyu-Seok (Division of Civil and Environment Technology, Gwangju University) ;
  • Soh, Bo-Kyoon (Division of Environmental and Agricultural Science, Sunchon National University)
  • 김영주 (순천대학교 환경농업과학부) ;
  • 진서영 (순천대학교 환경농업과학부) ;
  • 조자용 (남도대학 약용자원원예개발과) ;
  • 김길용 (전남대학교 농업생명과학대학) ;
  • 차규석 (광주대학교 토목환경공학부) ;
  • 손보균 (순천대학교 환경농업과학부)
  • Received : 2004.05.10
  • Accepted : 2004.10.04
  • Published : 2004.10.30
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Abstract

This experiment was carried out to screen the aeroponically grown host plants suitable for the mass propagation of arbuscular mycorrhizal fungi (AMF) inoculum and clarify the effect of P levels in nutrient solution on the growth of aeroponically grown sweet potato (Ipomoea batatas L.), AMF infection, and mass propagation of mycorrhizal spores, etc. Amount of biomass of host plant became higher, as the P levels in nutrient solutions increased from 5 to 20 M. AMF infection rates in mycorrhizal roots increased in higher P levels in nutrient solution, and decreased in lower parts of mycorrhizal roots by about 18.6-26.0%. About 586 mycorrhizal spores per 1 g fresh root were formed at 16 weeks after inoculation of mycorrhizal inoculum. Total of 830,479 mycorrhizal spores were propagated in each plot.

본 연구는 분무경 방식을 이용한 arbuscular 균근균 접종원의 대량배양증식을 위하여 기주식물의 종류와 분무양액의 P 농도 등에 따른 균근감염율 및 감염양상 변화 등을 비교하였다. 기주식물 선발에서는 고구마와 토마토가 수단그라스와 질경이에 비해 우수하였다. 또한 인산농도가 5 또는 $10{\mu}M$ 보다 $20{\mu}M$의 수준으로 높아질수록 뿌리의 생성량이 많아진 반면, 뿌리의 균근감염은 인산농도가 낮을수록 높고, 하부 뿌리로 갈수록 arbuscular 균근균 감염율이 낮아지는 경향을 보였으며 감염율은 18.6~26.0% 범위였다. 16주후의 포자형성을 조사한 결과 신선중 1 g 당 500개의 포자가 형성되었고, 분무생육상당 생산된 포자는 총830.479개였다.

Keywords

References

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