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Comparison of in vitro propagation and occurrence of morphological and genetic variation in strawberry tissue culture with various plant hormone treatments

딸기 조직배양 시 여러가지 식물호르몬 처리에 따른 기내 증식 및 형태적, 유전적 변이 발생 비교

  • Kim, Hye Jin (Highland Agricultural Research Institute, National Institute of Crop Science) ;
  • Lee, Jong Nam (Highland Agricultural Research Institute, National Institute of Crop Science) ;
  • Choi, Mi Ja (Highland Agricultural Research Institute, National Institute of Crop Science) ;
  • Suh, Jong Taek (Highland Agricultural Research Institute, National Institute of Crop Science)
  • 김혜진 (국립식량과학원 고령지농업연구소) ;
  • 이종남 (국립식량과학원 고령지농업연구소) ;
  • 최미자 (국립식량과학원 고령지농업연구소) ;
  • 서종택 (국립식량과학원 고령지농업연구소)
  • Received : 2019.02.25
  • Accepted : 2019.03.31
  • Published : 2019.06.30

Abstract

The objective of this study was to carry out treatment of various plant hormones in order to determine morphological and genetic variation degree of tissue-cultured strawberry. The cultivar used in this experiment was 'Goha' and 'Seolhyang', the plant hormones used for experiment were benzyladenine (BA), N-(2-Chloro-4 pyridyl)-N'-phenylurea (CPPU) and thidiazuron (TDZ), and the concentrations were 0.5, 1.0, 2.0, $4.0mg{\cdot}L^{-1}$ with each hormone. The BA treatment of the proliferation efficiency of tissue-cultured strawberry 'Goha' and 'Seolhyang' was the highest. When processing BA, CPPU and TDZ, morphological variation and genetic variation happened in strawberry 'Goha' and 'Seolhyang', especially, the variations appeared highly in CPPU treatment. The genetic variation in 'Goha' appeared at the concentration more than BA $0.5mg{\cdot}L^{-1}$ as 1.1%, appeared at the concentration of CPPU $0.5mg{\cdot}L^{-1}$ as 15.3%, and at the concentration of TDZ $2.0mg{\cdot}L^{-1}$ as 1.2%. The genetic variation in 'Seolhyang' appeared at the concentration of BA $4.0mg{\cdot}L^{-1}$ as 2.3%, and at the concentration of CPPU $0.5mg{\cdot}L^{-1}$ as 14.3%. Therefore, CPPU should not be treated during strawberry tissue culture, and BA and TDZ should be treated at low concentration.

본 실험은 딸기 조직배양 시 여러가지 식물호르몬의 농도 별처리에 따른 증식률 및 형태적, 유전적 변이 발생 정도를 확인하고자 실시하였다. 본 실험에 사용된 공시 품종은 '고하'와 '설향'이며, 본 실험에 사용한 식물 호르몬은 BA, CPPU 및 TDZ로, 농도는 0.5, 1.0, 2.0, $4.0mg{\cdot}L^{-1}$였다. '고하'와 '설향'의 조직배양묘 증식률은 BA 처리 시 가장 높았다. BA, CPPU 및 TDZ 처리 시 '고하' 및 '설향'에서 형태적 및 유전적 변이가 발생하였고, 특히 품종에 관계없이 CPPU 처리에서 변이가 높게 나타났다. '고하'의 유전적 변이는 BA $0.5mg{\cdot}L^{-1}$ 이상의 농도에서 1.1%로 나타났고, CPPU $0.5mg{\cdot}L^{-1}$에서 15.3%로 나타났으며, TDZ $2.0mg{\cdot}L^{-1}$에서 1.2%로 나타났다. '설향'의 유전적 변이는 BA $4.0mg{\cdot}L^{-1}$에서 2.3%로 나타났고, CPPU $0.5mg{\cdot}L^{-1}$에서 14.3%로 나타났다. 따라서 딸기 조직배양 시, CPPU는 처리하지 않는 것이 좋을 것으로 판단되고, BA나 TDZ또한 저농도로 처리하는 것이 바람직할 것으로 판단된다.

Keywords

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