GA3对‘石硖’龙眼假种皮糖积累及蔗糖代谢相关酶的影响  

Effects of GA_3 on Sugar Accumulation and Sugar Metabolism-related Enzyme Activities in Shixia of Dimocarpus longan Lour Fruits

作　　者：刘丽琴[1] 李建光[2] 舒波[1] 王一承[1] 武红霞[1] 决登伟[1] 石胜友[1] 

机构地区：[1]中国热带农业科学院南亚热带作物研究所,农业部热带果树生物学重点实验室,广东湛江524091 [2]广东省农业科学院果树研究所,广东广州510640

出　　处：《西南农业学报》2016年第11期2698-2703,共6页Southwest China Journal of Agricultural Sciences

基　　金：国家自然科学基金项目(31572087);广东省自然科学基金(2014A030307031);中央级公益性科研院所基本科研业务费专项(1630062015004);物种资源保护(农作物)项目(2016NWB053);物种资源保护费(农业野生植物保护)项目(1251416305010);国家热带果树种质资源平台运行服务项目(095)

摘　　要：为明晰外源赤霉素对龙眼果实发育与糖分形成的影响。本实验以‘石硖’龙眼为材料,测定外源GA3处理与对照龙眼果实生长发育指标、假种皮糖分含量及糖代谢相关酶活性水平,分析外源GA3在龙眼果实发育及糖分累积中的调控作用。果实生长发育指标表明,GA3处理增加了果实纵横径、重量及体积并显著增加了假种皮的重量。假种皮糖分水平及酶活性数据则显示,石硖龙眼假种皮以积累蔗糖为主且蔗糖代谢酶AI和SS(分解方向)在蔗糖累积中起主要作用。GA3处理并不影响糖的积累类型,但调控了蔗糖代谢相关酶活性的大小和变化趋势。To understand the effects of gibberellin on the Longan fruit development and sugar production, the index involving fruit development, the aril sugar content and the enzyme activities were measured in both GA3 treated ＇ Shixia＇ of Lonagn and the control. The results showed that GA3 treatment increased the weight, volume, longitudinal diameter and traverse diameter of fruit and the weight of aril. Sucrose is main sugar of ＇ Shixia＇ longan in aril , and sucrose metabolism was mediated mainly by AI and SS （the decomposition direction）. GA3 treatment did not affect sugar accumulation in aril but enhanced the efficiency of sucrose accumulation by activating the sucrose metabolismrelated enzymes .

关 键 词：GA3 果实发育 糖积累 蔗糖代谢相关酶 

分 类 号：S667.2[农业科学—果树学]