粳稻三系亲本的杂种优势研究  

Analysis of Heterosis of three-lines of Japonica Rice Parents

作　　者：孔宪旺[1] 袁彩勇[1] 王健[1] 汤述翥[2] 顾铭宏[2] 

机构地区：[1]江苏省徐淮地区淮阴农业科学研究所作物研究中心,江苏淮安223001 [2]扬州大学农学院教育部植物功能基因组学重点实验室,江苏扬州225009

出　　处：《辽宁农业职业技术学院学报》2009年第3期14-16,共3页Journal of Liaoning Agricultural Technical College

基　　金：江苏省高技术研究计划项目(BG2004302)

摘　　要：本研究收集具有代表性的BT型粳稻不育系、保持系及恢复系各16个,共配制229个杂交粳稻组合,就粳稻的杂种优势问题进行了较系统的研究,结果:杂交粳稻普遍存在较强的中亲优势,但多数性状的超亲优势不强,在生长势上则表现非常明显的竞争优势。杂交粳稻大穗优势突出,但结实率多表现为负向优势,是目前制约杂交粳稻产量优势发挥的主要限制因素。In this paper, we collected representative 16 varieties each for BT -type CMS lines, maintainers and restorers in each genus. Two hundred and twenty nine （229） cross combinations were made. In addition, we also systemically studied the heterosis. The main results are as follow： Hybrid Japonica rice had stronger mid - parent heterosis, but heterobeltosis of most characters were not strong. It was very clear that the growth force manifested competitive heterosis. It was evident that the panicle of hybrid ja- ponica rice was bigger, but seed setting rate expressed as negative heterosis, which was the main limiting factor re- stricting yield heterosis of hybrid japonica rice.

关 键 词：粳稻 质核互作雄性不育系 恢复系 杂种优势 

分 类 号：S511.035.1[农业科学—作物学]