钾元素在苹果果实糖积累中的作用  

Effects of Potassium on Sugar Accumulation in Apple Fruit

作　　者：张雯 张迪[1] 陈登文[1] ZHANG Wen;ZHANG Di;CHEN Dengwen(Yangling Vocational and Technical College,Yangling 712100,China)

机构地区：[1]杨凌职业技术学院生物工程分院,陕西杨凌712100

出　　处：《东北农业科学》2022年第5期98-101,160,共5页Journal of Northeast Agricultural Sciences

基　　金：陕西省科学技术研究发展计划项目(2011NXC01-19);陕西省教育厅科研计划项目(21JK0999);杨凌职业技术学院自然科学基金项目(316/0300106)。

摘　　要：通过施用不同浓度钾元素,探究钾元素对苹果果实糖积累的作用途径。以施入不同水平钾处理的“嘎啦”果实为材料,通过对单果重、可溶性固形物、可滴定酸、糖代谢产物含量及其相关酶活性等指标的测定,分析不同浓度钾处理对苹果果实品质形成的影响。研究发现钾素施用应早于花后84 d进行,且钾浓度越高对果实品质的促进作用越显著。钾元素可以通过调节SDH活性、SS活性和AI活性影响果糖积累,进而对果实糖积累起到促进作用。Via fertilizing different potassium levels,this paper studied the action pathway of sugar accumulation and the suitable fertilization time.This study was used‘gala’fruit as test materials,and applied different levels of potassium fertilizer.We tested fruit weight,soluble solids,titratable acid,sugar metabolites and their related enzyme activities.The research showed that potassium element should be fertilized before 84 days after bloom,and the higher concentration of potassium,the more significant promotional effects on fruit quality.What is more,potassium could influence fructose contents via SDH activity,SS activity and AI activity.The study not only provided theoretical basis for potassium to regulate fruit growth and development,but also provided theoretical guidance for apple yield and quality improvement.

关 键 词：果实品质 果糖 钾 糖积累 

分 类 号：S661.1[农业科学—果树学]