摘要
以3a生全球红葡萄为试材,研究了用不同浓度的赤霉素(GA_3)在花前、花后2次处理葡萄果穗后,测定其对葡萄果实淀粉积累规律以及淀粉代谢酶活性的影响。结果表明:GA_3处理增加了葡萄果实可溶性糖积累速率,蔗糖合成酶(SS)活性增加,以20mg/L GA_3处理最为显著;经GA_3处理的果实前期淀粉含量有不同程度的增加,总淀粉酶、α-淀粉酶活性增大,而对β-淀粉酶无明显影响。因此,GA_3与淀粉积累调控机理之间存在密切的联系。
The experiment was conducted with 3-year-old Red globe grape trees,the effect of GA_3 on the amylopectin accumulation and related enzyme activities in amylopectin metabolism of grape fruits were studied after spraying the GA_3 on the fruit on before blossoming and after blossoming.The results revealed that the sugar accumulate rate and the activity of sucrose synthnase raised after treated by GA_3,20 mg/L GA_3 treatment was the best significant;Amylopectin content of grape fruits increased differently after treated by GA_3,total amylase andα-amylase activity increased,while no significant effect onβ-amylase.There was a close connection between GA_3 and amylopectin accumulation.
出处
《北方园艺》
CAS
北大核心
2011年第11期17-20,共4页
Northern Horticulture
基金
国家自然科学基金资助项目(30760144)
新疆生产建设兵团科技局产学研专项资助项目(2010ZX02)
关键词
GA_3
葡萄
果实
淀粉积累
酶活性
GA_3
grape
fruite
amylopectin accumulation
enzyme activities
