赤霉素拉穗处理对西拉葡萄果实酚类物质的影响  

Effect of Gibberellin-Induced Cluster Elongation on Phenolic Contents of Syrah Grapes

作　　者：刘迪迪[1] 刘美迎[1] 王珍[1] 谢沙[1] 梁攀 张振文[1,2] LIU Didi;LIU Meiying;WANG Zhen;XIE Sha;LIANG Pan;ZHANG Zhenwen(College of Enology,Northwest A&F University,Yangling 712100,China;Shaanxi Engineering Research Center for Viti-viniculture,Yangling 712100,China)

机构地区：[1]西北农林科技大学葡萄酒学院,陕西杨凌712100 [2]陕西省葡萄与葡萄酒工程技术研究中心,陕西杨凌712100

出　　处：《食品科学》2018年第17期40-46,共7页Food Science

基　　金：现代农业产业技术体系建设专项(CARS-30-zp-09)

摘　　要：赤霉素是一种常见的植物激素,在高等植物的各个生长发育阶段都具有重要的调控作用。本实验针对山西临汾地区酿酒葡萄西拉果穗过于紧密、果实酚类物质含量低等问题,采用赤霉素进行拉穗处理:于葡萄开花前20 d和15 d分别采用3种不同质量浓度(3、5、7 mg/L)的赤霉素溶液浸蘸果穗,研究各处理方式下葡萄果实酚类物质的含量及组成差异。结果表明:开花前赤霉素处理对西拉葡萄果穗具有显著拉长作用(P<0.05),并促进了葡萄果实的成熟;单体花色苷含量和非花色苷单体酚类物质含量均随着赤霉素质量浓度的增加而增加,且相同质量浓度下开花前20 d赤霉素处理组单体花色苷含量高于开花前15 d处理组;所有处理组中以开花前20 d 7 mg/L赤霉素浸蘸处理果穗效果最优,该处理能显著提高葡萄大部分单体花色苷和非花色苷单体酚类物质含量(P<0.05),并对酰基化花色苷和黄酮醇类物质的形成有明显的促进作用。As one of the important phytohormones in plants,gibberellin plays a great regulatory role in the whole growth and developmental stages of higher plants.Focusing on the problems of the wine grape cultivar Syrah(Vitis vinifera cv.Syrah)in Linfen,Shanxi such as too dense clusters and low phenolic contents,this study investigated the application of gibberellin to elongate the grape clusters.For this purpose,three different concentrations(3,5 and 7 mg/L)of gibberellin were used to dip the clusters 15 and 20 days before flowering.After maturation,the contents and compositions of anthocyanins and nonanthocyanins in grape berries were analyzed.The results obtained were as follows:1)Gibberellin treatment had a significant effects on cluster elongation and fruit ripening(P<0.05);2)The contents of individual anthocyanins and non-anthocyanin monophenols increased with gibberellin concentration.For each gibberellin concentration,the contents of individual anthocyanins in grapes with gibberellin treatment 20 days before flowering were higher than 15 days before flowering;3)Among all treatments,dipping in 7 mg/L gibberellin solution 20 days before flowering was the most effective in significantly increasing the contents of most individual anthocyanins and non-anthocyanin monophenols(P<0.05)and facilitating the accumulation of acylated anthocyanins and flavonoid compounds.

关 键 词：西拉葡萄 赤霉素 拉长果穗 非花色苷单体酚类物质 单体花色苷 

分 类 号：S663.1[农业科学—果树学]