期刊
FOOD CHEMISTRY
卷 384, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.132381
关键词
Cuticular wax; Rabbiteye blueberry; Melatonin; Fruit development; Wax structure
资金
- Science and Technology Bureau of Ningbo city [2019B10024]
- Zhejiang AF University [2010FR089]
- National Innovation and Entrepreneurship Training Program for Undergraduates [202110341040]
- Innovation Training Program of Zhejiang Province for University Students (Xinmiao Talent Program)
In this study, the effects of melatonin treatment on the morphology and composition of cuticular wax in blueberry fruits were investigated. The results showed that melatonin treatment increased the total content of cuticular wax and improved fruit quality.
Cuticular wax has been implicated in the first line of plant defense mechanism against external stresses. In this study, cuticular wax on the fruits of two rabbiteye blueberry cultivars cv. Baldwin and Brightwell were examined in terms of the morphology and chemical composition during fruit development in the presence and absence of pre-harvest melatonin (MT) treatment. It revealed that the crystal wax appeared as numerous tubules, and its morphology was not affected by MT treatment. A dominant constituent of triterpenoid at veraison stage was beta-amyrin (45.62% of total wax) in Baldwin and oleanolic acid (22.79% of total wax) in Brightwell. Exogenous MT application significantly promoted fruit quality and increased total content of cuticular wax, however, the effect of MT on individual wax components greatly varied depending on cultivars and fruit developmental stage. Consequently, MT application may enhance sustainability of post-harvest fruit production systems by facilitating accumulation of cuticular wax.
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