Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Effects of Diniconazole Application on Anatomical and Biochemical Characteristics Related to Stress Tolerance in Lilum davuricum

날개하늘나리에 있어서 디니코나졸 처리가 스트레스 내성과 관련된 해부학적 및 생화학적 특성에 미치는 영향

  • Eum, Sun-Jung (Department of Horticultural Science, Yeungnam University) ;
  • Park, Kyeung-Il (Department of Horticultural Science, Yeungnam University) ;
  • Choi, Young-June (Gangjin Agricultural Technology and Extension Center) ;
  • Oh, Wook (Department of Horticultural Science, Yeungnam University) ;
  • Kim, Kiu-Weon (Department of Horticultural Science, Yeungnam University)
  • 엄선정 (영남대학교 자연자원대학 원예생명과학과) ;
  • 박경일 (영남대학교 자연자원대학 원예생명과학과) ;
  • 최영준 (강진군농업기술센터) ;
  • 오욱 (영남대학교 자연자원대학 원예생명과학과) ;
  • 김규원 (영남대학교 자연자원대학 원예생명과학과)
  • Received : 2012.01.09
  • Accepted : 2012.02.28
  • Published : 2012.06.30
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Abstract

This study was carried out to examine the effects of foliar-sprayed diniconazole on the morphological characteristics and the contents of polyamines (PA) and proline, and to investigate their relationship with stress tolerance in Lilium davuricum native to Korea. Plants with 5 cm mean height were sprayed with $50mg{\cdot}L^{-1}$ diniconazole or distilled water (control) and grown in a greenhouse maintained at 23/$18^{\circ}C$ (day/night) for 30 days. Diniconazole decreased plant height, leaf length, diameter and length of the pith and cortical cell of the stem, while it increased the thickness and epicuticular wax of leaves measured at 30 days after treatment. In polyamines contents, diniconazole increased spermidine content at 5-10 days after treatment and spermine content after the 10th day of treatment as compared with the control. Diniconazole decreased proline content after the 10th day of treatment as compared with the control. From these results, it was concluded that foliar-sprayed diniconazole might morphologically and biochemically improve the stress tolerance of this plant species.

본 연구는 디니코나졸(diniconazole, DCZ) 분무처리가 날개하늘나리(Lilium davuricum)의 형태학적 특성 및 폴리아민(polyamines, PA)과 프롤린(proline) 함량에 미치는 영향을 구명하여 식물 스트레스 내성과의 관련성을 파악하기 위해 수행되었다. 이를 위해 초장 5cm의 식물체에 DCZ $50mg{\cdot}L^{-1}$와 증류수(대조구)를 엽면살포한 후 23/$18^{\circ}C$(주/야)의 온실에서 30일간 생육시켰다. 처리 30일 후 DCZ 처리에 의해서는 날개하늘나리의 초장과 엽장이 감소하였고, 줄기 세포의 크기와 길이가 줄어들었으며, 잎의 두께와 표피조직의 큐티클층의 두께는 증가하였다. PA의 함량에 있어서, DCZ는 처리 후 5-10일경 spermidine의 함량을 증가시켰고 처리 10일 이후에는 spermine의 함량을 크게 증가시켰다. 프롤린 함량은 대조구에 비해 DCZ 처리구에서 처리 10일 후부터 함량이 감소하였다. 이 결과들을 종합해 볼 때, DCZ 처리는 형태해부학적 및 생화학적 측면에서 날개하늘나리의 스트레스 내성을 향상시킬 것으로 판단되었다.

Keywords

References

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