Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effect of film liner packaging with chlorine dioxide on the storage quality of containergrown or bare-root seedlings at cold or frozen temperatures in sawtooth oak and Japanese larch

  • Yu-Rim, Kim (Department of Horticulture, Chungnam National University) ;
  • Min-Seok, Cho (Korea Forest Technology and Management Research Center, National Institute of Forest Science) ;
  • Byung-Bae, Park (Department of Environment & Forest Resources, Chungnam National University) ;
  • Jong-Pil, Chun (Department of Horticulture, Chungnam National University)
  • Received : 2021.08.20
  • Accepted : 2021.10.05
  • Published : 2021.12.01
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Abstract

This study was carried out to discover suitable packaging methods during the cold or frozen storage of sawtooth oak and Japanese larch seedlings, which are major afforestation tree species in Korea. The weight loss rate of sawtooth oak was lower under frozen storage at -2℃ (maximum, 33.7%) than under cold storage at 2℃ (maximum, 61.0%). A film liner treatment inside the packaging box effectively suppressed the increase in the weight loss rate. For the sawtooth oak containerized seedlings, when stored at -2℃, the rate of weight loss was 17.9 to 25.4% in the untreated group and less than 1% in the film liner treatment group. Similar results were observed with Japanese larch. After two months of freezing at -2℃, both species maintained a low index of 1.0 - 1.1 with regard to the degree of shoot desiccation of containerized seedlings, and there was no significant difference between the treatments. On the other hand, the chlorine dioxide treatment could more effectively reduce the occurrence of mold and shoot desiccation than a PE single treatment in bare-root seedlings. According to these results, it was concluded that frozen storage is generally suitable as a means of long-term storage compared to cold storage of sawtooth oak and Japanese larch. A chlorine dioxide treatment at 20 ppm was effective for maintaining seedling quality levels during storage, demonstrating the good effect of suppressing the occurrence of shoot desiccation and the occurrence of mold.

Keywords

Acknowledgement

해당 성과는 국립산림과학원 산림기술경영연구소 2020년 위탁연구과제와 2021년도 정부(과학기술 정보통신부)의 재원으로 정보통신기획평가원의 지원을 받아 수행된 연구임[NO. 2020-0-01441, 인공지능융합연구센터지원(충남대학교)].

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