Journal of Plant Biotechnology

  • 제45권4호
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  • Pages.382-391
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  • 2018
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  • 1229-2818(pISSN)
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  • 2384-1397(eISSN)
한국식물생명공학회 (The Korean Society of Plant Biotechnology)
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사과 대목 M.26 (Malus pumila Mill)의 기내 대량번식 및 simple sequence repeat 마커를 이용한 증식된 식물체의 유전적 다양성 평가

In vitro micropropagation of M.26 (Malus pumila Mill) apple rootstock and assessment of the genetic diversity of proliferated plantlets using simple sequence repeat markers

  • 조강희 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 한봉희 (농촌진흥청 농업기술실용화재단) ;
  • 한점화 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 박서준 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 김세희 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 이한찬 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 김미영 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 김명수 (농촌진흥청 국립원예특작과학원 과수과)
  • Cho, Kang Hee (Fruit Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Han, Bong Hee (Foundation of Agri. Tech. Commercialization and Transfer) ;
  • Han, Jeom Hwa (Fruit Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Park, Seo Jun (Fruit Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Kim, Se Hee (Fruit Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Lee, Han Chan (Fruit Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Kim, Mi Young (Fruit Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Kim, Myung-Su (Fruit Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration)
  • 투고 : 2018.10.24
  • 심사 : 2018.11.20
  • 발행 : 2018.12.31
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초록

본 연구는 사과 대목 M.26 (Malus pumila Mill))의 효과적인 기내 대량번식하기 위해 신초 증식과 뿌리 형성에 적합한 배지조건을 확립하고, simple sequence repeat (SSR) 마커를 이용하여 증식된 소식물체의 유전적 다양성을 분석하고자 수행하였다. MS (Murashige and Skoog) 기본배지에 benzyladenin (BA, $0.5{\sim}5.0mg{\cdot}L^{-1}$)와 thidiazuron (TDZ, $0.01{\sim}0.1mg{\cdot}L^{-1}$)을 첨가하여 신초를 배양한 결과, $1.0mg{\cdot}L^{-1}$ BA 처리에서 절편체 당신초 수가 10.67개로 가장 많았으며 과수화 발생률은 BA 처리구보다 TDZ 처리구에서 높았다. M.26 신초 증식에 BA와 auxin과의 혼용처리 효과는 없었고, $1.0mg{\cdot}L^{-1}$ BA가 첨가된 MS 기본배지가 적합하였다. 신초 발근에 적합한 배지를 구명하고자 auxin인 indole-3-butyric acid (IBA)와 ${\alpha}$-naphthaleneacetic acid의 농도($0.5{\sim}5.0mg{\cdot}L^{-1}$), MS 배지의 무기염류(1/4 ~ 1배) 및 sucrose 농도($0{\sim}30g{\cdot}L^{-1}$)를 달리하여 처리한 결과, $1.0mg{\cdot}L^{-1}$ IBA, $15{\sim}20g{\cdot}L^{-1}$ sucrose가 첨가된 1/2 MS 배지에서 발근율(100%), 뿌리 수(10.45 ~ 13.60개/절편체), 뿌리 길이(7.41 ~ 8.33 cm) 및 신초 길이(4.93 ~ 5.38 cm)가 양호하였다. 15종의 SSR primer를 이용하여 증식된 20개의 소식물체를 분석한 결과, 총 30개의 대립유전자가 검출되었으며 모두 동일한 밴드 패턴을 보여 온실에서 자란 M.26 식물체와 유사하여 유전적으로 안정한 것으로 판단되었다.

The objective of this study was to determine the most effective medium condition of shoot proliferation and root formation for the efficient in vitro micropropagation of M.26 (Malus pumila Mill). Simple sequence repeat (SSR) markers were used to analyze the genetic diversity of micro-propagated and greenhouse grown M.26. Shoot proliferation was carried out in MS (Murashige and Skoog) containing benzyladenin (BA, $0.5{\sim}5.0mg{\cdot}L^{-1}$) and thidiazuron (TDZ, $0.01{\sim}0.1mg{\cdot}L^{-1}$). The highest number of shoots (10.67 shoots per explant) was induced by adding BA at a concentration $1.0mg{\cdot}L^{-1}$. TDZ treatments caused higher hyperhydricity rate in cultured explants than in BA treatments. There was no significant effect of both BA and auxin on shoot proliferation, and the optimum proliferation medium for M.26 was MS medium containing $1.0mg{\cdot}L^{-1}$ BA. To find a suitable medium composition for shoot rooting, we tested different concentrations indole-3-butyric acid (IBA) and ${\alpha}$-naphthaleneacetic acid ($0.5{\sim}5.0mg{\cdot}L^{-1}$), MS medium (1/4-1), sucrose ($0{\sim}30g{\cdot}L^{-1}$). The shoots showed good rooting on half-strength MS medium containing $1.0mg{\cdot}L^{-1}$ IBA and $15-20g{\cdot}L^{-1}$ sucrose. The rooting rate (100%), number of roots (10.45 ~ 13.60 roots per explant), root length (7.41 ~ 8.33 cm), and shoot length (4.93 ~ 5.38 cm) were good on this medium. Fifteen SSR primers were detected in a total of 30 alleles in 20 micro-propagated plantlets, all SSR profiles from micro-propagated plantlets were monomorphic and similar to greenhouse grown control plantlet M.26 plant. The results indicated that M.26 micro-propagated plantlets were genetically stable.

키워드

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