数字农科院2.0

Evaluation of the Effect of Preharvest Melatonin Spraying on Fruit Quality of ‘Yuluxiang’ Pear Based on Principal Component Analysis

文献类型： 外文期刊

作者： Liangliang Zhao;Shuai Yan;Yufei Wang;Gongxun Xu;Deying Zhao

作者机构：

关键词： exogenous melatonin;fruit quality;Pyrus bretschneideri;soluble sugar

期刊名称： Foods

ISSN： 2304-8158

年卷期： 2023 年 12 卷 18 期

页码：

收录情况： SCIE（2023版）

摘要： Melatonin (MT), an indoleamine compound, has a pleiotropic effect on plant growth and development and can regulate the quality of tree fruit. Systematic research on the effect of preharvest MT spraying on pear fruit quality and technical solutions for MT application to regulate pear fruit quality are still lacking. Thus, here we aimed to evaluate the effects of different spraying times, concentrations, and exogenous MT application times on ‘Yuluxiang’ pear fruit quality. Our results showed that the single fruit weight and vertical and horizontal diameters of pear fruit sprayed with MT twice at 30 and 90 d after full bloom were the largest, and the red and green values of the treatment were the highest. MT-treated pears had higher contents of total soluble solids, soluble sugar, sucrose, sorbitol, fructose, and glucose and lower contents of titratable acid, malic acid, and citric acid. Moreover, exogenous MT treatment increased the pear peel strength. Based on the principal component analysis of 10 fruit quality indices, the suitable periods for MT spraying on ‘Yuluxiang’ pears were 30 and 90 d after full bloom, the suitable concentration was 100 μmol/L, and the suitable number of times was two. This study provides a theoretical reference for optimizing MT application and improving pear fruit quality.

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