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Effect of Red LEDs during Healing and Acclimatization Process on the Survival Rate and Quality of Grafted Tomato Seedlings

토마토 접목묘의 순화과정에서 적색LED광조사가 접목 활착율과 묘소질에 미치는 영향

  • Vu, Ngoc-Thang (Department of Horticulture, Kangwon National University) ;
  • Kim, Young-Shik (Department of Plant and Food Science, Sangmyung University) ;
  • Kang, Ho-Min (Department of Horticulture, Kangwon National University) ;
  • Kim, Il-Seop (Department of Horticulture, Kangwon National University)
  • Received : 2014.01.23
  • Accepted : 2014.03.11
  • Published : 2014.03.31

Abstract

This study was designed to determine the effect of red LEDs during healing and acclimatization process on the survival rate and quality of grafted tomato seedlings. Red LEDs and no light (darkness) were used for treating three rootstock cultivars, which are 'B-Blocking', 'Kanbarune', 'High-power' in healing room. Results showed that survival rates of grafted seedlings in red LEDs were higher than those in no light treatment. Significant variation on survival rates of rootstock cultivars was observed in no light treatment but there was not significant variation in red LEDs treatment. Light treatment also reduced the percentage of infected plants, except for the 'Kanbarune' cultivar. Seedling quality in red LEDs was better than that in no light treatment by improving growth parameters such as plant height, leaf length, leaf width, leaf area, fresh and dry weight of shoot and root. Light treatments and rootstock cultivars did not affect number of leaves, leaf chlorophyll value and T/R ratio of seedlings, but seedlings in red LEDs were significantly more compact than those in no light treatment. Moreover, the root morphology of seedlings such as total root surface area, total root length, and number of toot tips in red LEDs was also greater than that in no light treatment.

본 연구는 토마토 플러그묘의 접목후, 순화과정에서 단기간 광조사 여부가 접목 활착율과 묘소질에 미치는 영향을 구명하기 위하여 실시 되었다. 공시 품종으로 'B-Blocking', 'Kanbarune', 'High-Power'의 3종류 대목 품종에 방울토마토 'Choice' 품종을 각각 접목한 뒤, 활착실에서 10일간 적색LED 광조사구와 무처리(대조구)로 나누어 접목 활착율과 묘소질을 조사하였다. 적색 LED 광조사구의 접목 활착율은 대목품종에 관계없이 무처리구에 비해 높았다. 광조사구 접목 활착율은 세 품종 모두 90% 이상으로 품종간의 유의성이 없었으나, 무처리구의 접목 활착율은 35~72% 정도로 품종에 따른 차이가 매우 컸다. 활착기간 중 곰팡이병 이병율도 'Kanbarune'를 제외하고 광조사구가 무처리구에 비해 저하하는 경향을 보였으나, 품종간 유의차는 나타나지 않았다. 묘소질은 경경, 엽수, 엽록소 함량을 제외한 모든 생육지표에서 LED광 조사구가 우수한 결과를 나타내었으나, 처리에 따른 대목 품종간 유의차는 전반적으로 나타나지 않았다. 지하부 생육에서 평균 근경을 제외한 뿌리 표면적, 전 근장, root tip수는 광조사구가 무처리구에 비해 모든 품종에서 우세하였다.

Keywords

References

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