Salicylic acid 및 1-MCP 처리가 ‘캠벨얼리’ 포도의 생리장해 및 품질에 미치는 영향 = Effects of Salicylic Acid and 1-Methylcyclopropene on Physiological Disorders and Berry Quality in ‘Campbell Early’ Table Grapes

국문 초록 (Abstract)

본 연구는 우리나라 대표 수출 포도 품종인 ‘캠벨얼리’ 를 대상으로 에틸렌작용억제제인 1-methylcylopropene(1- MCP)과 에틸렌생합성 저해 효과를 지닌 salicylic acid(SA)를 단독 혹은 병행처리하여 과실의 저장 및 유통환경에서 발생하는 탈립, 갈변 및 부패 등 생리장해의발생과 과실 품질에 미치는 영향을 에틸렌 발생물질인에테폰과 비교하여 검토하였다. 1-MCP 1,000ppb 훈증처리 후 SA 25μM을 살포 처리하고 19oC에서 16일간저장한 후 조사한 과립경도 및 산함량 수준은 단용처리에 비하여 높게 나타났다. 탈립률은 100μL·L-1 에테폰 처리구 41.7%, SA 처리구 40.8%, 1-MCP 처리구 38.2%로나타났으나 1-MCP 처리 후 SA를 처리한 경우는 18.7% 로 탈립방지 효과가 월등하였다. 브러쉬의 길이를 측정한 결과, 에테폰 처리구는 1mm 미만의 비율이 74.3%로매우 높게 나타났던 반면, 1-MCP 처리 후 SA를 처리한경우는 2-4mm의 비율이 22.8%, 4-6mm 비율이 27.9% 로 브러쉬 길이가 길게 조사되었다. 과축의 무게는 에테폰 처리구에서 2.3g으로 가장 낮아 감모율의 증가에 미치는 에틸렌의 영향과 1-MCP 및 SA의 감모 억제효과를 확인할 수 있었다. 또한 1-MCP와 SA는 저장 중 ‘캠벨얼리’ 포도의 줄기갈변 억제 및 부패 경감에 일부 효과가 있음을 확인되어 추후 수출시 품질유지를 위한 기술 적용이 가능할 것으로 판단되었다.

다국어 초록 (Multilingual Abstract)

This study was conducted to compare the effect of salicylic acid (SA), an ethylene biosynthesis inhibitor, and the 1-methylcyclopropene (1-MCP) fumigation, to prevent fruit quality deterioration and physiological disorders during the shelf-life of Korea’s leading export grape variety ‘Campbell Early’. The berries treated with SA after 1- MCP fumigation (1-MCP+SA) showed a higher firmness value and titratable acidity than single treatment of SA or 1-MCP. The rate of shattered berry was high as 41.7% for 100ppm ethephon spray, 40.8% for 25μM SA, and 38.2% for 1,000ppb 1-MCP, but showing only 18.7% when the SA was applied after 1-MCP fumigation. The ratio of short brushes less than 1mm was largest at 74.3% for ethephon treatment, while 1-MCP+SA treatment was found to have the longest brush length among all treatments, with a 2-4mm ratio of 22.8% and a 4-6mm ratio of 27.9%. The weight of rachis was found to be the lowest at 2.3g in the ethephon treatment, and the reduction of rachis weight loss per cluster by 1-MCP+SA treatment was evident. In addition, 1-MCP+SA treatment were effective in mitigating stem browning and berry decay during the 16-day storage period at 19oC in this cultivar, so it is believed that they can be used as a practical post-harvest treatment in grape exportation.

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