广西植物2017，Vol.37Issue(9)：1143-1152,10.DOI:10.11931/guihaia.gxzw201612035
成串采收对番茄果实采后乙烯合成及贮藏品质的影响
Effects of string-harvest on ethylene production and storage quality in post-harvest tomato fruit
摘要
Abstract
Ethylene is a very important plant hormone, would cause rapid fruit ripening and softening. Keeping fruit freshness through regulation of ethylene biosynthesis and signal transduction is well studied. Tomatoes are typical climac-teric fruits, very sensitive to ethylene action, so their post-harvest ethylene responses always cause fruit deterioration during storage periods. Tomato string-harvest is to harvest a cluster of fruits with the stem, which is more applicable to the cherry tomato fruit type. String-harvest shows its superiorities like high yield and labor saving in tomato productions, and fruits are sold at higher prices because of their longer shelf-life. This study aimed to clarify the effects of string-har-vest trials on the ethylene production and storage quality in post-harvest tomato fruit, and to develop methods of exten-ding tomato shelf-life. Cherry tomatoes graft-cultivated with two rootstocks ( No. 1 and No. 3) from two production areas (Ⅰand Ⅱ) in Tianyang County of Guangxi Zhuang Autonomous Region in China, were taken as experimental materials. Tomatoes harvested by string (treatment) or single fruit (control), were analyzed for their changes in the rate of ethylene production, content of carotenoid, lycopene, ascorbic acid, soluble sugar and titratable acids. Moreover, re-sults indicate that throughout storage periods, ethylene production in string-harvest tomatoes with different rootstocks and cultivation areas were significantly lower than controls. The ethylene production rate in string-harvest tomato with Root-stock No.1 in Area I decreased rapidly to the minimum (0.35 nL·g-1·h-1) 5 d after harvest, significantly lower than its control (1.36 nL·g-1·h-1), and other string-harvest tomatoes in different areas with different rootstocks reached their minimum 15 d after harvest. And, the content of natural antioxidants such as carotenoid, lycopene and ascorbic acid in string-harvest tomatoes increased significantly in the early storage period. Additionally, the string-harvest treatment also inhibited the post-harvest accumulation of soluble sugar and degradation of titratable acid to a certain extent. Finally, string-harvest treatment inhibited the fruit ethylene production, increased carotenoid, lycopene and ascorbic acid level, and delayed post-harvest changes of sugar and acid content, to extend tomato shelf-life and improve commodity quality. This work proposes to explain the physiological mechanisms of the fruit freshness regulation by string-harvest tri-als, provide basal knowledge and evidence for development of new post-harvest technologies, as well as offer guidelines to improving tomato storability and quality, which are meaningful to the tomato production industry.关键词
果实/采后生理学/成串采收/乙烯/保鲜Key words
fruit/post-harvest physiology/string-harvest/ethylene/freshness分类
农业科技引用本文复制引用
王坤,王岳霞,刘思敏,贾蕊,林玲,于文进,孙宁静..成串采收对番茄果实采后乙烯合成及贮藏品质的影响[J].广西植物,2017,37(9):1143-1152,10.基金项目
国家自然科学基金(31501809) （31501809）
广西科学研究与技术开发计划(桂科合 14123001-25,桂科攻 14121006-5-5,桂科攻1598006-2C) （桂科合 14123001-25,桂科攻 14121006-5-5,桂科攻1598006-2C）
广西自然科学基金(2015GXNSFBA139112) [Supported by the National Natural Science Foundation of China (31501809) （2015GXNSFBA139112）
Guangxi Scientific Research and Technology Development Programs (14123001-25, 14121006-5-5, 1598006-2C) （14123001-25, 14121006-5-5, 1598006-2C）
Guangxi Natural Science Foundation (2015GXNSFBA139112)]. （2015GXNSFBA139112）
