期刊名称：Current Journal of Applied Science and Technology
印刷版ISSN：2457-1024
出版年度：2018
卷号：25
期号：4
页码：1-6
语种：English
出版社：Sciencedomain International
摘要：Accumulation of sugars is an important metabolic process that occurs during grape berry development. Sugars are transported into the berry mainly in the form of sucrose and are broken down into glucose and fructose by the enzymes invertase and sucrose synthase. Changes in activities of invertase and sucrose synthase in the juice of three table grape genotypes (Flame Seedless, Perlette and Muscat Hamburg) was studied during four developmental stages. The characteristic rapid increase in the rate of sugar accumulation in the juice throughout the development was preceded by the activity of invertase. At the same time the rate of sugar accumulation also increased the activity of sucrose synthase. There is a possibility that sugar accumulation in grape juice occurs by pathway involving changes in the activity of enzyme for this process to operate. The results of the present study suggests that in the grape genotypes studied, invertase and sucrose synthase activities are positively correlated with high berry sugar content.
