Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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Effect of foliar spraying 6-benzylaminopurine on the growth and flowering of Sedirea japonica seedling

6-benzylaminopurine의 엽면살포가 나도풍란 유묘의 생장 및 개화에 미치는 영향 분석

  • Jiae An (Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology) ;
  • Hyeong-Bin Park (Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology) ;
  • Pyoung-Beom Kim (Wetland Center, National Institute of Ecology) ;
  • Hwan-Joon Park (Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology) ;
  • Seongjun Kim (Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology) ;
  • Chang-Woo Lee (Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology) ;
  • Byoung-Doo Lee (Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology) ;
  • Ju-Hyoung Baek (Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology) ;
  • Nam-Young Kim (Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology) ;
  • Jung-Eun Hwang (Division of Restoration Research, Research Center for Endangered Species, National Institute of Ecology)
  • 안지애 (국립생태원 멸종위기종복원센터 복원연구실) ;
  • 박형빈 (국립생태원 멸종위기종복원센터 복원연구실) ;
  • 김평범 (국립생태원 습지센터) ;
  • 박환준 (국립생태원 멸종위기종복원센터 복원연구실) ;
  • 김성준 (국립생태원 멸종위기종복원센터 복원연구실) ;
  • 이창우 (국립생태원 멸종위기종복원센터 복원연구실) ;
  • 이병두 (국립생태원 멸종위기종복원센터 복원연구실) ;
  • 백주형 (국립생태원 멸종위기종복원센터 복원연구실) ;
  • 김남영 (국립생태원 멸종위기종복원센터 복원연구실) ;
  • 황정은 (국립생태원 멸종위기종복원센터 복원연구실)
  • Received : 2023.09.01
  • Accepted : 2023.11.20
  • Published : 2023.12.30
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Abstract

Sedirea japonica is one of the critically endangered species in South Korea mostly due to artificial harms such as illegal collection and habitat destruction. Therefore, artificial propagation through improving germination rate, increasing growth, and controlling flowering is meaningful for the conservation and reintroduction of S. japonica. It is suggested that cytokinins are one of the multi-factors that contribute to plant growth and floral responses. Especially, exogenous cytokinins have been known to induce or promote shoot growth or earlier flowering in orchids. Therefore, it was investigated how the application of 6-benzylaminopurine (BA) influenced the growth and inflorescence of S. japonica. A foliar spray containing BA at 100, 200, 300, and 400 ppm was applied from 1st July to 30th December 2021. Leaf length, leaf length growth rate, leaf width, and width and length ratio were measured as growth-related factors. Visible inflorescence rate, inflorescence length, the number of flowers per inflorescence, and the distance between the stalks were measured as flowering-related factors. Growth-related factors except for leaf growth rate were not affected by BA treatments, while leaf growth rate was significantly increased by 200 ppm of BA treatment. The visible inflorescence rate increased by 200 ppm of BA treatment, and there seems an optimal concentration and threshold of BA treatment. An iterative experiment with more seedlings and measurement factors would be helpful to figure out the effects of exogenous BA treatment on S. japonica, and it can be applied for mass propagation.

Keywords

References

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