作物学报2017，Vol.43Issue(10)：1448-1457,10.DOI:10.3724/SP.J.1006.2017.01448
籼型杂交水稻农艺性状的配合力研究
Combining Ability Analysis of Agronomic Trait in Indica × Indica Hybrid Rice
摘要
Abstract
How to effectively use heterosis is the key of improving yield for rice. In present study, under North Carolina design II, 115 elite indica rice varieties, including three-way wild-abortive hybrid restorer line and mini-core collection, were separately crossed with four two-way restorer lines and one three-way sterile line to generate 575 tested crosses, and combining ability, heritability and correlations of nine agronomic traits were analyzed. Except for tillers per plant and filled grains per panicle, the general combining ability (GCA) variances of most agronomic traits were extremely significant, and except for tillers per plant, the specific combining ability (SCA) variances of other agronomic traits were extremely significant. The SCA of different traits in the same combination or SCA of same trait in different combinations sharing one parent were different, indicating no consistent relationship between SCA and parental GCA. Therefore, selection of high GCA parental line combining with superior SCA com-binations is the key to obtain high yield hybrid rice.关键词
杂交水稻/三系野败型/NCII设计/配合力/杂种优势Key words
Hybrid rice/Three-way wild-abortive type/North Carolina design II/Combining ability/Heterosis引用本文复制引用
张征,张雪丽,莫博程,代志军,胡中立,李兰芝,郑兴飞..籼型杂交水稻农艺性状的配合力研究[J].作物学报,2017,43(10):1448-1457,10.基金项目
本研究由中国博士后基金项目(2012M511722,2014T70769),湖南省自然科学基金项目(2016JJ3070),湖南省教育厅青年基金项目(2015118)和湖南农业大学作物种质创新与资源利用国家重点实验室培育基地开放课题(16KFXM03)资助. The study was supported by the China Postdoctoral Science Foundation Funded Project (2012M511722,2014T70769),the Natural Science Foundation of Hunan Province (2016JJ3070),the Scientific Research Fund of Hunan Provincial Education Department (2015118),and Hunan Provincial Key Laboratory for Germplasm Innovation and Utilization of Crop (16KFXM03). （2012M511722,2014T70769）
