생물환경조절학회지 (Journal of Bio-Environment Control)

  • 제33권1호
  • /
  • Pages.12-21
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  • 2024
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  • 1229-4675(pISSN)
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  • 2765-3641(eISSN)
한국생물환경조절학회 (The Korean Society for Bio-Environment Control)
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딸기 삽목 육묘 시 묘 생육에 미치는 지베렐린 침지농도 및 시간의 영향

The Effect of Gibberellin Dipping Concentration and Treatment Time on the Growth of Cutting Propagules in Strawberry

  • 김은지 (전라북도농업기술원 ) ;
  • 김치선 (전라북도농업기술원 ) ;
  • 정현수 (전라북도농업기술원 ) ;
  • 이준구 (전북대학교 농업생명과학대학 원예학과 )
  • Eun Ji Kim (Jeollabuk-do Agricultural Research and Extension Services) ;
  • Chi Seon Kim (Jeollabuk-do Agricultural Research and Extension Services) ;
  • Hyun Soo Jung (Jeollabuk-do Agricultural Research and Extension Services) ;
  • Jun Gu Lee (Department of Horticulture, College of Agriculture & Life Sciences, Jeonbuk National University)
  • 투고 : 2023.11.06
  • 심사 : 2023.12.14
  • 발행 : 2024.01.31
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초록

본 연구는 딸기의 삽목 육묘 시 묘소질을 향상시키고 품질을 증진시키기 위한 지베렐린 효과를 검증하기 위해 수행되었다. 품종은 '설향'을 대상으로 하였고, 삽목 시 삽수의 기부를 30, 60분간 GA3 50, 100, 150mg·L-1에 침지 처리하고 증류수 침지를 대조구로 두었다. 정식 시 묘소질 조사 결과 엽수와 SPAD 값은 지베렐린 침지시간이 길수록 증가하였고, 초장, 엽병장, 엽장, 엽폭, 엽면적은 침지시간과 농도 간의 상호작용에 따라 유의하게 값이 변하였다. 관부직경은 같은 농도라 할지라도 침지시간에 따른 차이가 나타났으며 30분, 100mg·L-1 처리를 제외하고 모두 직경이 8.0mm 이상으로 우량한 묘가 생성되었으며, T/R률은 30분, 50mg·L-1 처리에서 유의하게 작아 식물체 활력이 가장 우수했다. 양자수율은 농도가 150mg·L-1일 때 저조하였고, 지베렐린 처리 농도가 높을수록 양자수율이 감소하는 경향을 나타냈다. NPQ는 대조구 대비 30분, 150mg·L-1 처리에서 유의하게 작아 묘 스트레스 감소에 효과가 있었다. 항산화물 함량은 30분, 50mg·L-1 처리와 60분, 150mg·L-1 처리에서 높게 나타났고, 정식 후 생육조사 결과 화아분화 정도에 미치는 지베렐린의 부정적 영향은 없었다. 따라서, '설향' 딸기의 삽목 육묘 시 지베렐린 처리는 정식묘 양성에 효과가 있는 것을 확인할 수 있었으며, 이때 대조구 대비 생육 증진 및 품질 향상을 위해서는 삽수 기부를 50mg·L-1의 지베렐린에 30분 침지처리하는 것이 보다 적정한 것으로 판단되었다.

The aim of this research was to investigate the effect of gibberellin on improving seedling growth characteristics and enhancing strawberry quality in cutting propagation. Cuttings of the cultivar 'Seolhyang' were treated with GA3 for 30 and 60 minutes at concentrations of 50, 100, and 150 mg·L-1, with distilled water used for dipping as the control. Evaluation of seedling growth showed a positive correlation between the duration of gibberellin dipping and growth characteristics such as leaf number and SPAD value. Plant height, petiole length, leaf length and width, and leaf area varied significantly based on the interaction between dipping time and concentration. Crown diameter exhibited differences depending on the dipping time, with cuttings producing superior seedlings having a diameter of 8.0 mm or more for all treatments except the 30-minute, 100 mg·L-1 treatment. The T/R ratio was significantly lower in the 30-minute, 50 mg·L-1 treatment, indicating the highest plant vigor. Quantum yield was lower at a concentration of 150 mg·L-1, showing a decreasing trend with increasing gibberellin concentration. Nonphotochemical quenching was significantly smaller in the 30-minute, 150 mg·L-1 treatment, indicating an effective reduction of stress in the cuttings. Antioxidant content was highest in the 30-minute, 50 mg·L-1 treatment and the 60-minute, 150 mg·L-1 treatment. Moreover, the results of post-transplanting growth assessment showed no negative effect of gibberellin on flowering induction. Therefore, it was confirmed that gibberellin treatment during the cutting propagation of 'Seolhyang' strawberries had a positive effect on the production of high-quality seedlings. Dipping the cuttings in 50 mg·L-1 gibberellin for 30 minutes is considered to be the most suitable method for improving growth and quality compared to the control.

키워드

과제정보

본 연구는 전라북도농업기술원의 연구비 지원으로 수행되었음.

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