Comparisons of Protein Composition of Grains at Different Positions in Panicles between Erect and Curved Panicle Type Japonica Rice

作     者：Shuqiang CHEN Jingfang XUE Xiaodong DU Limin YANG Haixin ZHAO Tong ZHOU Lili SHAN Cui WANG Min LI Guojun PAN 

作者机构：Postdoctoral WorkstationHeilongjiang Academy of Agricultural Sciences Postdoctoral Research StationNortheast Forestry University Jiamusi Rice Research InstituteHeilongjiang Academy of Agricultural Sciences 

出 版 物：《Agricultural Biotechnology》 (农业生物技术（英文版）)

年 卷 期：2015年第4卷第6期

页      面：1-6,9页

学科分类：09[农学] 0901[农学-作物学] 

基　　金：Supported by Science and Technology Project for Grain Production in National Science and Technology Support Program(2011BAD16B11-02YJ01 2012BAD04B01-02) Key Scientific and Technological Project of Heilongjiang Province(GA13B101) Fund for Distingnished Young Scholars of Heilongjiang Academy of Agricultural Sciences(2014) 

主　　题：Japonica rice Panicle type Grain position Protein composition 

摘      要：Under field conditions, three erect panicle type japonica dee cultivars and three curved panicle type japonica rice cultivars were applied as experimental materials to investigate the differences of protein composition of grains at different positions in panicles between two different panicle types of japonica rice. Accord- ing to the results, the panicle type of japonica rice had no direct correlation with albumin content, globulin content, prolamin content and glutelin content in rice, variations of protein composition of grains at different positions in panicles. There were certain correlations between soluble protein contents at different grain posi- tions in the same panicle and the flowering order of glumous flowers in the panicle. Albumin content, prolamin content and glutelin content in grains on secondary rachis branches of two panicle types （erect and curved） of japonica rice cuhivars were higher than that on primary rachis branches, while globulin content exhibited an opposite trend. Globulin content, prolamin content and glutelin content in grains at different positions demonstrated a descending order of bottom 〉 middle 〉 top, while albumin content exhibited an opposite trend. The interactions between primary and secondary rachis branches and among top, middle and bottom rachis branches significantly affected soluble protein contents.