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Study on the Mechanism of ‘Fuji’ Apple Flesh Cracking(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年17
Page:
15-21
Research Field:
Publishing date:

Info

Title:
Study on the Mechanism of ‘Fuji’ Apple Flesh Cracking
Author(s):
ZHAO Dan1; SU Yanping1; LI Baoguo1; 2; CHEN Menghua1; ZHANG Xuemei1; 2; QI Guohui1; 2
（1.College of Forestry，Agricultural University of Hebei，Baoding，Hebei 071000；2.Research Center for Walnut Engineering and Technology of Hebei，Lincheng，Hebei 054300）
Keywords:
apple; fruit cracking; flesh cracking; cutin layer; mineral elements
PACS:
-
DOI:
10.11937/bfyy.201517005
Abstract:
Different degrees of fruit cracking orchards were used as research object，in October 2014，apple cracking and the orchard managements were investigated，flesh soluble solids contents，cutin layer thicknesses，main mineral element contents in flesh and peel were determined，and the fruit water soaking test was carried out in order to reveal the mechanism of ‘Fuji’ apple flesh cracking.The results showed that the flesh soluble solids contents and cutin layer thicknesses in cracking fruits were significantly or very significantly higher than those of in normal fruits.Ca content in cracking fruits peel was very significantly lower than that of normal fruits，the fruit cracking degree aggravated with the peel Ca content decreased.There were very significantly positive correlations between the flesh soluble solids content and the total length of single fruit cracks，and significantly positive correlation between the flesh soluble solids content and the average depth of cracks.Cutin layer thickness was found significantly positively correlated with the average width and depth of cracks.There were very significantly positive correlations among the peel N and Mg contents and the total length of single fruit cracks，the average width and depth of cracks and the average cracks number of single fruit；there were significantly negative correlations among the peel K contents and the average width of cracks，the average cracks number of single fruit；there were significantly negative correlations among the flesh K content and the total length of single fruit cracks，the average width and depth of cracks and the average cracks number of single fruit.There were significantly or very significantly positive correlations among the peel N/K，N/Ca，P/Ca and K/Ca ratio and the total length of single fruit cracks，the average width and depth of cracks and the average cracks number of single fruit.There were significantly or very significantly negative correlations among the peel K/Mg，Ca/Mg and K/Mg ratio and the total length of single fruit cracks，the average width and depth of cracks and the average cracks number of single fruit.There also were significantly positive correlations among the flesh P/K ratio and the total length of single fruit cracks and the average width of cracks.The normal apples in fruit cracking orchards appeared cracks in 19-23 hours after soaking into distilled water，and with the soaking time prolonged，fruit cracking degree was aggravated；the apples in control orchard didn’t appear cracks in the first 3 days after soaking into distilled water，the slight cracks appeared until 4 days later after soaking.

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Last Update: 2015-09-29