文献类型： 外文期刊
作者： Xu, Fangjie 1 ; An, Haishan 1 ; Zhang, Jiaying 1 ; Xu, Zhihong 2 ; Jiang, Fei 3 ;
作者机构： 1.Shanghai Acad Agr Sci, Forestry & Pomol Res Inst, Shanghai Key Lab Protected Hort Technol, 1000 Jinqi Rd, Shanghai 201403, Peoples R China
2.Zhejiang A&F Univ, Coll Adv Agr Sci, 666 Wushu St, Hangzhou 311300, Peoples R China
3.Shanghai Res Inst Citrus, 1888 Fenghuang Rd, Shanghai 201913, Peoples R China
关键词： satsuma mandarin; tree fruit load; sugar; acid quality; puffiness; fruit texture analysis; delayed harvest
期刊名称：HORTICULTURAE （ 影响因子：2.331； 五年影响因子：2.951 ）
ISSN：
年卷期： 2021 年 7 卷 7 期
页码：
收录情况： SCI
摘要： Delayed harvesting technology is believed to improve the citrus fruit flavor, but improper tree fruit load under delayed harvest might cause puffiness and reduce fruit quality. In order to find out an optimum tree fruit load level to obtain better flavor quality as well as reduce puffiness in delayed-harvest citrus under protected cultivation, experiments were conducted in the present study between 2019 and 2020 to determine the effect of different fruit loads and fruit-bearing per single branch on the soluble sugars and organic acids metabolism in the peel and flesh, the anatomical structure of the matured fruit peel, and fruit texture-related indexes. The results suggested significant negative correlations between leaf N level and flesh sucrose and glucose contents, and between branch P level and flesh citric acid contents; no significant correlation between NPK levels and flesh texture; relatively lower leaf N and branch P under relatively higher load can increase flesh sucrose and glucose accumulation and slow down citric acid degradation to the greater extent, thus optimizing the sugar/acid ratio of fruits during delayed harvest. The lignification of parenchyma cells closely around peel secretory cavities due to ascorbic acid deficiency might be the primary cause for puffiness under low-load treatments.
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