热带作物学报2018，Vol.39Issue(3)：480-488,9.DOI:10.3969/j.issn.1000-2561.2018.03.012
温度和乙烯处理对番荔枝软熟过程中多糖代谢的影响
Effect of the Regulation of Different Temperature and Ethylene Treatments on Polysaccharide Metabolism During African Pride Winter Fruits Ripening and Softening
摘要
Abstract
African Pride(AP) winter fruits were chosen as the materials.In order to explore the effects of temperature and ethylene on atemoya winter fruit ripening and softening from the perspective of polysaccharide metabolism,starch,total soluble sugars,sucrose contents in pulp,protopectin and soluble pectin in the pericarp and pulp were determined,meanwhile the cell wall metabolism related enzymes(PG,Cx,PME) activities in the pericarp and pulp were analyzed.The results showed that low temperature(20 ℃) inhibited the conversion of starch to soluble sugars,and high temperature(32 ℃) promoted starch degradation,whereas under 28 ℃,fruits softened the fastest.The pericarp was hardened under 28 ℃ and 32 ℃,which might have relationship with the protopectin synthesis.The softening of the fruits might be associated with the protopectin degradation in the pulp,but no positive connection with soluble pectin contents increased.Both temperature and ethylene had different degree influence on PME,PG and Cx activities,but 28 ℃ treatment had more significant inducement on enzymes activities than other treatments.The activities of Cx and PG changes were tightly associated with fruit softening,whereas PME might not be a key role in fruit softening.关键词
番荔枝/温度/乙烯/多糖代谢Key words
atemoya/temperature/ethylene/polysaccharide metabolism分类
农业科技引用本文复制引用
李伟明,陈晶晶,段雅婕,胡会刚,庞振才,谢江辉..温度和乙烯处理对番荔枝软熟过程中多糖代谢的影响[J].热带作物学报,2018,39(3):480-488,9.基金项目
中央级公益性科研院所基本科研业务专项(No.1630062016003) （No.1630062016003）
现代农业人才支撑计划. （）
