Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Application of Gamma Irradiation and Its Convergent Treatments on Several Varieties of Oriental Hybrid Lily to Control Leaf Blight

수출용 오리엔탈 백합 품종 잎마름병 방제를 위한 감마선 및 화학 대체제 융복합 처리 효과

  • Kim, Ji-Hoon (Department of Biomedical Sciences, Sun Moon University) ;
  • Koo, Tae-Hoon (Department of Biomedical Sciences, Sun Moon University) ;
  • Hong, Sung-Jun (Department of Biomedical Sciences, Sun Moon University) ;
  • Yun, Sung-Chul (Department of Biomedical Sciences, Sun Moon University)
  • 김지훈 (선문대학교 의생명과학과) ;
  • 구태훈 (선문대학교 의생명과학과) ;
  • 홍성준 (선문대학교 의생명과학과) ;
  • 윤성철 (선문대학교 의생명과학과)
  • Received : 2014.05.29
  • Accepted : 2014.06.20
  • Published : 2014.06.30
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Abstract

In order to seek more eco-friend, economic and safer quarantine method than current methyl bromide fumigation, the convergent treatment with 200 Gy of gamma irradiation and several chemicals such as nano-siver particles (NSS), sodium dichloroisocyanurate (NaDCC) was tried on the cuttings of lily in the packing of catonnage box for export. With 6 independent experiments of gamma irradiation on the three lily cultivars, cvs. Siberia, Le reve and Sorbonne, incidence and severity of lily leaf blight was investigated on leaves and petals at 8-d after infection. 200 Gy of gamma irradiation decreased at 13-25% of severity on the leaf of Sorbonne, but it increased at 2-5% of severity on the leaf of Siberia and Le reve. Chemical substitutes such as NSS and NaDCC were not effective to control of lily blight on cuttings. By 200 Gy of gamma irradiation treatment, chlorophyll contents were statistically significantly decreased at 12-d after irradiation and the longevities vaselife of fully open flower of Siberia and Sorbonne were increased at 0.4 to 1.2 days. In addition, the relative fresh weights of the gamma irradiated cuttings were severely dried compared to the non-irradiated control. On the other hands, the symptoms of phyto-toxicity of high dose gamma irradiation at 1 or 2 kGy on cv. Siberia were to be blight at the tip of bloom, bent necks of flower, and delayed the process of flowering.

화훼 수출 검역에서 기존 메틸브로마이드 훈증보다 경제적이고 친환경적이며 안전한 대안으로서 감마선 융복합 처리 기술을 백합 잎마름병 방제에 적용하였다. 감마선 융복합 처리는 200 Gy 감마선과 이염화이소시안산나트륨(NaDCC) 은나노 입자(NSS)의 화학대체제를 시베리아, 르네부, 소르본느 품종의 절화 백합이 담긴 수출포장용 종이상자에 총 6회로 실시하였다. 감마선 조사 8일 후 백합 잎과 꽃잎에서 측정한 발병율(disease incidence)과 발병도(disease severity)로 분석 결과, 감마선은 소르본느 잎에서 발병도를 약 13-25% 감소시킨 반면, 르네부 잎에서는 발병도를 2-5% 증가시켰다. 화학대체제 처리와 무처리를 비교한 결과 절화 백합 수출현장에서 화학대체제의 잎마름병 발병 억제 효과를 기대할 수 없었다. 한편, 조사 12일 후 감마선 처리 유무에 따른 백합 잎의 엽록소 함량 비교 결과 감마선에 의해 통계적으로 유의하게 감소하였고, 시베리아와 소르본느 꽃의 만개 기간을 0.4-1.2일 연장시켰다. 또한 감마선이 조사된 절화는 화병에서 무처리에 비해 마름이 발생하여 생중량 감소가 뚜렷하였다. 한편, 1과 2 kGy 고선량 감마선은 백합 꽃봉오리 끝 부분을 짙은 갈색으로 변색시키거나 꽃봉오리 목 부분의 꺽임, 봉오리가 개화하지 못하게 하는 등 마름 이외에도 감마선 과도에 의한 품질저해 피해가 나타났다.

Keywords

References

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Cited by

  1. Combined Treatment with Gamma Irradiation and Sodium Dichloroisocyanurate to Control Leaf Blight and to Preserve Cut Lilies vol.22, pp.2, 2016, https://doi.org/10.5423/RPD.2016.22.2.94
  2. Controlling Botrytis elliptica Leaf Blight on Hybrid Lilies through the Application of Convergent Chemical X-ray Irradiation vol.32, pp.2, 2016, https://doi.org/10.5423/PPJ.OA.09.2015.0187