北方粳稻籽粒灌浆特性及其蔗糖代谢酶的活性研究  

Study on Grain Milking Characteristics and Sucrose Metabolism Enzyme Activity of Northern Japonica Rice

作　　者：崔鑫福[1] 马莲菊[2] 吕文彦[1] 曹萍[1] 朱彩云[1] 邵国军[3] 武翠[1] 

机构地区：[1]沈阳农业大学农学院,沈阳110161 [2]沈阳师范大学化学与生命科学学院,沈阳110034 [3]辽宁省农业科学院稻作研究所,沈阳110101

出　　处：《吉林农业大学学报》2005年第1期15-18,共4页Journal of Jilin Agricultural University

基　　金：辽宁省博士启动基金资助项目(2001102059);辽宁省自然科学基金资助项目(20032092)

摘　　要：以常规稻品种"辽粳9号"和杂交稻品种"9158"为试验材料,对其灌浆过程中强、弱势粒的灌浆速率、蔗糖和淀粉含量以及蔗糖合成酶与蔗糖酶的活性进行了分析。结果表明:2个水稻品种的强势粒由于起始生长势高,进入灌浆盛期早,蔗糖酶和蔗糖合成酶活性强,蔗糖含量高,因而灌浆明显优于弱势粒。在蔗糖代谢过程中,蔗糖合成酶的活性显著高于蔗糖酶,说明蔗糖由源向库的输入主要由蔗糖合成酶来调控。During the grain milking period, Liaojing 9 and the hybrid variety 9158 were used to study and analyze the rate of grain milking, changes of sucrose and starch content of superior and inferior grains, and sucrose synthase activity and invertase activity . The results showed that the superior grains of rice, which quickly enter the active grain-milking stage, had higher initial growth power in each entry than that of the inferior grains. The superior grains also performed higher activities of sucrose synthase and invertase, and higher sugar content than those of the inferior grains. So it was helpful to promote the transportation of dry matter into the strong grains, resulting in the increased milked grains during the grain milking period. The result also showed the activity of sucrose synthase was higher than that of invertase during sucrose metabolism. Sucrose synthase mainly controlled imputing sugar content from source to sink.

关 键 词：北方粳稻 灌浆速率 蔗糖合成酶 蔗糖酶 

分 类 号：S511.22[农业科学—作物学]