Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Occurrence of Micro-cracking According to Bagging Paper in 'Mansoo' Pear Fruits

과실 봉지에 따른 배 '만수' 품종의 미세 열과 발생

  • Choi, Jin-Ho (Pear Research Institute, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Yim, Sun-Hee (Pear Research Institute, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Kim, Sung-Jong (Spokesperson Office, Rural Development Administration) ;
  • Lee, Han-Chan (Fruit Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Kwon, YongHee (Fruit Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
  • 최진호 (농촌진흥청 국립원예특작과학원 배연구소) ;
  • 임순희 (농촌진흥청 국립원예특작과학원 배연구소) ;
  • 김성종 (농촌진흥청 대변인실) ;
  • 이한찬 (농촌진흥청 국립원예특작과학원 과수과) ;
  • 권용희 (농촌진흥청 국립원예특작과학원 과수과)
  • Received : 2015.02.24
  • Accepted : 2015.04.01
  • Published : 2015.08.31
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Abstract

This study was conducted to study the factors inducing micro-cracking and determine proper practices to reduce its occurrence in 'Mansoo' pear fruits. Micro-cracking was observed on ripe fruits. Occurrence of micro-cracking was closely related to sun duration time in August. Micro-cracking occurred severely with shorter sun duration, but weakly with longer sun duration and continuous sunlight. Micro-cracking fruits occurred more frequently in trees with a pergola training system than in those with Y-trellis, but there was no difference between the irrigated and non-irrigated groups. While no micro-cracking was observed without fruit bagging, micro-cracking occurred in fruits with black and yellow outer paper bagging at rates of 62.2 and 17.3%, respectively. Our results suggest that the light condition was the most important cause of micro-cracking because the occurrence of micro-cracking in 'Mansoo' fruits was affected by factors including sun duration, trellis system and fruit bag color. We suggested that micro-cracking could be reduced in 'Mansoo' fruit by optimizing the light conditions with the proper trellis system, bagging color and summer pruning.

본 연구는 배 '만수' 품종의 열과 발생의 원인과 재배 조건을 구명하여 발생을 경감시킬 수 있는 재배 방법을 제안하고자 수행하였다. 미세 열과는 성숙기 과실에서 발견되었다. 미세 열과의 발생은 8월 중의 일조 시간과 밀접한 관련을 나타내었다. 발생이 심했던 해에는 일조 시간이 부족하였으며, 발생이 적었던 해에는 일조 시간이 길고 일조량이 많은 날이 연속되어 광 조건이 우수하였다. Y자 수형보다는 평덕식에서 많이 발생하였고, 인공 관수구와 무관수 처리구에서 미세 열과 발생률의 차이는 나타나지 않았다. 무대 처리구에서는 미세 열과가 전혀 발생하지 않았으나, 외피가 흑색과 황색인 봉지를 이용한 처리구에서의 미세 열과 발생은 각각 62.2% 및 17.3%로 흑색 봉지 처리구에서 미세 열과가 심하게 발생하였다. 따라서 '만수' 과실의 미세열과 발생은 일조 시간, 수형 및 봉지 색에 따라 차이를 보여 광 조건이 가장 크게 작용하는 것으로 판명되었다. '만수' 과실의 미세열과를 방지하기 위해서는 적합한 수형 및 봉지 색을 선택하고, 하계전정 등을 통해 광 조건을 개선하는 것이 요구된다.

Keywords

References

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