This study was conducted to investigate the effect of 1-methylcyclopropene(1-MCP), an inhibitor of ethylene action, on fruit quality and incidence of physiological disorders during simulated marketing period in early-season Asian pear(Pyrus pyrifolia Nakai) ‘Noksu’. Flesh firmness was decreased abruptly at 15 days after shelf-life in control fruits. which showed less than 10.7N, although those of 1-MCP-treated fruits were kept high value(>30.4N) during 20 days of shelf-life. ‘Noksu’ pears did not show any considerable differences in quality indices such as soluble solids content, titratable acidity during the shelf-life regardless of 1-MCP treatment. The reduction of ethylene production level by 1-MCP treatment did not appeared in ‘Noksu’ pear. Meanwhile, 1-MCP treated ‘Noksu’ pears showed significantly low respiration rate during shelf-life. Also, 1-MCP treatment blocked the incidence of physiological disorders including core browning, internal browning, water soaking and mealiness symptom during shelf-life. Consequently, we concluded that the 1-MCP treatment effectively inhibited the incidence of physiological disorders and extended the shelf-life for 10 days in early-season Asian pear ‘Noksu’.

• 이욱용(국립원예특작과학원 배연구소) | Ug-Yong Lee (Pear Research Institute, National Institute of Horticultural & Herbal Science, Naju 58216, Korea)
• 최진호(국립원예특작과학원 배연구소) | Jin-ho Choi (Pear Research Institute, National Institute of Horticultural & Herbal Science, Naju 58216, Korea)
• 김윤경(국립원예특작과학원 배연구소) | Yoon-Kyeong Kim (Pear Research Institute, National Institute of Horticultural & Herbal Science, Naju 58216, Korea)
• 김진국(경상대학교 원예학과(농업생명과학연구원)) | Jin-gook Kim (Dept. of Horticulture, College of Agriculture and Life Sciences(Institute of Agriculture and Life Science), Gyeongsang National University, Jinju, 52828, Korea)
• 천종필(충남대학교 원예학과) | Jong-Pil Chun (Dept. of Horticulture, Chungnam National University, 99 Daehak-ro, Daejeon, 34134, Korea) Corresponding author