Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Development of the Exocarp and Occurrence of Micro-cracking in 'Jinmi' Peaches

복숭아 '진미'의 외과피 발달과 미세균열

  • Ma, Kyeong-Bok (Pear Research Station, National Institute of Horticultural & Herbal Science) ;
  • Chun, Jong-Pil (Department of Horticulture, Chungnam National University) ;
  • Kim, Jung-Bae (Fruit Research Division, National Institute of Horticultural & Herbal Science) ;
  • Do, Kyung-Ran (Fruit Research Division, National Institute of Horticultural & Herbal Science) ;
  • Cho, Kwang-Sik (Pear Research Station, National Institute of Horticultural & Herbal Science) ;
  • Choi, Jin-Ho (Pear Research Station, National Institute of Horticultural & Herbal Science) ;
  • Hwang, Hae-Sung (Pear Research Station, National Institute of Horticultural & Herbal Science)
  • 마경복 (국립원예특작과학원 배시험장) ;
  • 천종필 (충남대학교 원예학과) ;
  • 김정배 (국립원예특작과학원 과수과) ;
  • 도경란 (국립원예특작과학원 과수과) ;
  • 조광식 (국립원예특작과학원 배시험장) ;
  • 최진호 (국립원예특작과학원 배시험장) ;
  • 황해성 (국립원예특작과학원 배시험장)
  • Received : 2010.05.24
  • Accepted : 2011.10.10
  • Published : 2012.02.29
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Abstract

This study was conducted to elucidate the cause of micro-cracking in the exocarp of 'Jinmi' peach (Prunus persica). through the microscopic observation of fruit skin development in 4 varieties such as 'Jinmi', 'Kanoiwa Hakuto', 'Kawanakajima Hakuto', and 'Yumyeong'. Micro-cracking was noted in 59.1% of 'Jinmi', 30.6% of 'Kanoiwa Hakuto', 21.5% 'Kawanakajima Hakuto' and 6.4% of 'Yumyeong', respectively. The development of intercellular spaces, which increased rapidly with the fruit development, was easily observed at 69 days after full bloom. Histological studies revealed that the number of outer epiderm cell layers of 'Jinmi' was smaller than that of the other three cultivars, and thinner than the 'Kawanakajima Hakuto' and 'Yumyeong'. Moreover, 'Jinmi' exhibited smaller and flatter shapes in the sub-epidermal cell layer than those of the 'Kawanakajima Hakuto' and 'Yumyeong' at harvest season. Therefore, these results suggest that micro-cracking of 'Jinmi' fruit skin was due to poor-developed outer epidermis and well-developed intercellular spaces just under exocarp as compared with other varieties.

본 연구는 복숭아 '진미'의 미세균열 발생원인을 구명하기 위하여 시기별로 외과피 조직의 발달양상을 관찰하였으며, 수확기에는 '가납암백도', '천중도백도', '유명'과 외과피 조직의 차이를 비교하였다. 미세균열 발생은 '진미'에서 59.1%로 가장 높았고, '가납암백도' 30.6%, '천중도백도' 21.5%, '유명' 6.4%의 순이었다. '진미'는 만개 후 69일부터 외표피 바로 아래에서 공동화 현상이 쉽게 관찰되었으며, 생육이 진전될수록 공동화 현상이 확대되었다. 또한 수확기에 '진미' 품종은 외과피 층의 수가 다른 품종들에 비하여 적었으며, '천중도백도'와 '유명'에 비하여 외과피층의 두께가 얇고, 아표피 세포들의 크기가 작으며, 모양이 납작하였다. 따라서 복숭아 '진미'의 미세균열은 다른 품종에 비해서 외표피층의 발달 불량과 외과피 바로 아래 부분의 공동화 현상 발달에 기인한 것으로 판단되었다.

Keywords

References

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