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http://dx.doi.org/10.7235/hort.2015.15026

Occurrence of Micro-cracking According to Bagging Paper in 'Mansoo' Pear Fruits  

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)
Publication Information
Horticultural Science & Technology / v.33, no.4, 2015 , pp. 479-485 More about this Journal
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.
Keywords
cork layer; light transmittance; parenchyma tissue; sun duration; sunlight;
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