Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
권호 표지

Effects of UV-B and Growth Inhibitor on Physiological Changes and Antioxidat Enzyme Activities in Fruit Vegetable Plug Seedlings

UV-B와 생장억제 처리가 과채류 플러그묘의 생리 변화 및 항산화 효소의 활성에 미치는 영향

  • Kwon, Joon-Kook (Busan Horticultureal Experiment Station, NYAES, RDA) ;
  • Kang, Nam-Jun (Busan Horticultureal Experiment Station, NYAES, RDA) ;
  • Lee, Jae-Han (Busan Horticultureal Experiment Station, NYAES, RDA) ;
  • Choi, Young-Ha (Busan Horticultureal Experiment Station, NYAES, RDA) ;
  • Yu, In-Ho (Busan Horticultureal Experiment Station, NYAES, RDA) ;
  • Cho, Mi-Ae (Busan Horticultureal Experiment Station, NYAES, RDA) ;
  • Kim, Hoe-Tae (Busan Horticultureal Experiment Station, NYAES, RDA)
  • 권준국 (영남농업시험장 부산원예시험장) ;
  • 강남준 (영남농업시험장 부산원예시험장) ;
  • 이재한 (영남농업시험장 부산원예시험장) ;
  • 최영하 (영남농업시험장 부산원예시험장) ;
  • 유인호 (영남농업시험장 부산원예시험장) ;
  • 조미애 (영남농업시험장 부산원예시험장) ;
  • 김회태 (영남농업시험장 부산원예시험장)
  • Published : 2003.12.01
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Abstract

The physiological changes and antioxidant enzyme activities of plug seedlings irradiated with 4 kJ${\cdot}m^{-2}{\cdot}d^{-1}$ UV-B or sprayed growth inhibitors of 50 ${\cdot}L^{-1}$ diniconazole and 500 mg${\cdot}L^{-1}$ hexaconazole for retarding the overgrowth of cucumber, tomato and hot pepper seedlings in summer season were investigated. Photosynthetic rate just after UV-B irradiation was significantly low but recovered to the level of non-treated seedlings 10 days after IV-B irradiation. And photosynthetic rate of chemical-sprayed seedlings was slightly lower in tomatoes but not different in cucumbers and peppers, compared with non-treated seedlings. Cholrophyll contens in the leaves showed no difference among treatments. Anthocyanin contents in the leaves of UV-B-irradiated seedlings were higher and no difference inchmical-sprayed seedlings, compared with non-treated seedlings. the activites of SOD(superoside dismutase), CAT )catalase), and POD(perosidase) of UV-B-irradated seedlings were higher thatn those of the non-irradiated seedlings just after UV-B irradiation. However. 10 days after UV-B irradiation, the activities were decreased to half of the value just after UV-B irradiation Whereasd the activies of chemical-sprayed seedlings were slightly higher than those of non-treated ones but lower than those of UV-B-irradiated one.

오이, 토마토 고추 작물의 고온기 플러그 육묘시 묘의 도장 방지와 과번무 억제를 위한 UV-B와 생장 억제제의 처리가 플러그묘 식물체의 생리적 특성 변화와 항산화 효소의 활성에 미치는 영향을 조사하였다. 광합성능력은 UV-B 처리묘의 경우 무처리에 비해 처리 직후에는 크게 떨어졌으나 10일 후에는 비스하게 회복되었고 생장억제제 처리묘는 무처리에 비해 토마토가 다소 떨어졌어나 오이와 고추는 비슷하였다. 엽록소함량은 3작물 모두 처리간에 유의한 차이가 없었다. 안토시아닌 함량은 무처리에 비해 UV-B 처리한 것이 다소 높았던 반면 생장억제제 처리한 것은 무처리와 비슷하였다. SOD, CAT, POD 등의 항산화효소의 활성은 3작물 모두 UV-B 처리한 것이 가장 높았으며, 처리 직후에는 크게 증가되었다가 10일 후에는 그 절반 이하로 감소하였다. 한편 생장억제제 처리묘는 무처리에 비해서 항산화 효소의 활성이 다소 높았으나 UV-B 처리묘에 비해서는 낮았다.

Keywords

References

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