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

作　　者：张征[1] 张雪丽 莫博程 代志军 胡中立[2] 李兰芝[1] 郑兴飞[2] ZHANG Zheng;ZHANG Xue-Li;MO Bo-Cheng;DAI Zhi-Jun;HU Zhong-Li;LI Lan-Zhi;ZHENG Xing-Fei(Hunan Province Collaborative Innovation Center for the Key Agriculture Pest Control, Hunan Agricultural University, Changsha 410128, China;State Key Laboratory of Hybrid Rice, Wuhan 430072, China)

机构地区：[1]湖南省重要有害生物防控协同创新中心/湖南农业大学植物保护学院,湖南长沙410128 [2]武汉大学杂交水稻国家重点实验室,湖北武汉430072

出　　处：《作物学报》2017年第10期1448-1457,共10页Acta Agronomica Sinica

基　　金：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);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~~

摘　　要：如何有效利用杂种优势已成为水稻增产的关键。本研究按照NCII遗传交配设计,将三系野败型杂交水稻的恢复系和微核心种质构成的115份优异籼稻品种,分别与4个两系不育系及1个三系不育系测交,分析各农艺性状配合力、遗传力及相互关系。结果表明,除单株有效穗数、主穗实粒数外,其他农艺性状一般配合力差异均达到极显著水平;除单株有效穗数外,其他各农艺性状特殊配合力差异也均达到极显著水平。同一组合的不同性状、同一亲本的不同组合所表现出的特殊配合力效应都有所不同,表明亲本的一般配合力水平与特殊配合力间没有固定的联系。在育种实践中,选取一般配合力高的亲本,同时兼具较高特殊配合力是获取高产杂交稻组合的关键。How to effectively use heterosis is the key of improving yield for rice.In present study,under North Carolina design II,115elite 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 generate575tested 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 combinations 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 

分 类 号：S511.21[农业科学—作物学]