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Effect of Preharvest Sprayable 1-Methylcyclopropene (1-MCP) Treatment on Fruit Quality Attributes in Cold Stored 'Gamhong' Apples

수확전 수체살포용 1-MCP 처리가 '감홍' 사과의 저온저장 중 과실품질에 미치는 영향

  • Yoo, Jingi (Dept. of Horticultural Science, Kyungpook National University) ;
  • Kim, Dae Hyun (Dept. of Horticultural Science, Kyungpook National University) ;
  • Lee, Jinwook (USDA-ARS, Tree Fruit Research Laboratory) ;
  • Choi, Dong Geun (Department of Horticulture Science, Chonbuk National University) ;
  • Han, Jeung-Sul (School of Ecological Environment Conservation & Ecotourism, Kyungpook National University) ;
  • Kwon, Soon-Il (Apple Research Station, NIHHS, RDA) ;
  • Kweon, Hun-Joong (Apple Research Station, NIHHS, RDA) ;
  • Kang, In-Kyu (Dept. of Horticultural Science, Kyungpook National University)
  • 유진기 (경북대학교 원예과학과) ;
  • 김대현 (경북대학교 원예과학과) ;
  • 이진욱 (미국농무성 과수연구실) ;
  • 최동근 (전북대학교 원예학과) ;
  • 한증술 (경북대학교 생태환경관광학부) ;
  • 권순일 (국립원예특작과학원 사과시험장) ;
  • 권헌중 (국립원예특작과학원 사과시험장) ;
  • 강인규 (경북대학교 원예과학과)
  • Received : 2013.08.02
  • Accepted : 2013.09.10
  • Published : 2013.09.30

Abstract

This work was carried out to evaluate the effect of preharvest sprayable 1-methylcyclopropene (1-MCP: $Harvista^{TM}$) treatment on the fruit quality attributes in cold stored 'Gamhong' (Malus domestica Borkh) apples. Preharvest sprayable 1-MCP treatment did not affect fruit qualities at harvest but titratable acidity (TA) was higher in fruit treated 10 days before harvest (DBH) than in control. During cold storage, fruit firmness and TA were higher in 1-MCP treated fruit than in control fruit as storage duration progressed, while SSC was not affected. Internal ethylene concentration (IEC) levels were not different among treatments at harvest. While the IEC level in control fruit reached to $58.3{\mu}L{\cdot}L^{-1}$ after 6 month cold storage, the IEC levels in 1-MCP treated fruit ranged from 18.2 to $25.0{\mu}L{\cdot}L^{-1}$. Therefore, this result indicates that preharvest sprayable 1-MCP treatment should be another promising approach to retain fruit quality attributes in long-term cold stored 'Gamhong' apples.

본 연구는 수확전 수체살포용 1-MCP(Harvista) 처리가 국내 육성품종인 '감홍' 사과의 품질과 저장성에 미치는 영향을 구명하고자 실시하였다. 수체살포용 1-MCP 처리 후 수확시에 과실의 산 함량은 1-MCP 수확 10일전 처리가 무처리에 비하여 높았으나 다른 과실품질 요인들은 차이가 없었다. 그리고 저장동안 '감홍' 사과의 품질변화를 보면 저장기간이 길어질수록 1-MCP 처리 과실들의 경도와 산 함량이 무처리 과실보다 높게 유지되었으나 가용성고형물 함량은 차이가 없었다. 내생 에틸렌 발생량은 수확시에는 처리간 차이가 없이 낮은 에틸렌발생을 보였으나 무처리 과실들은 저장 180일에는 $58.3{\mu}L{\cdot}L^{-1}$로 급격히 증가한 반면 1-MCP 처리 과실들은 $18.24{\sim}25.03{\mu}L{\cdot}L^{-1}$로 현저히 낮은 발생량을 보였다. 따라서 '감홍' 사과에 수확전 수체살포용 1-MCP 처리가 저장기간동안 과실의 품질을 유지하는데 효과적이었다.

Keywords

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