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http://dx.doi.org/10.7235/hort.2012.10102

Development of the Exocarp and Occurrence of Micro-cracking in 'Jinmi' Peaches  

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)
Publication Information
Horticultural Science & Technology / v.30, no.1, 2012 , pp. 1-5 More about this Journal
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.
Keywords
intercelluar space; layer; Prunus persica; sub-epidermis;
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