三系杂交稻优质不育系德66A主要经济性状的配合力分析  

Analysis on Combining Ability of Main Economic Characters of Three-line Sterile Line De66A

作　　者：蒋钰东[1,2] 况浩池 罗俊涛[1,2] 何兴材 杨扬[1,2] 付均 郑军[1,2] 陈光珍 曾正明[1,2] JIANG Yudong;KUANG Haochi;LUO Juntao;HE Xingcai;YANG Yang;FU Jun;ZHENG Jun;CHEN Guangzhen;ZENG Zhengming(Rice and Sorghum Institute,Sichuan Academy of Agricultural Science/Key Laboratory of Southwest Rice Biology and Genetic Breeding,Deyang,Sichuan 618000,China;Luzhou Branch,National Rice Improvement Center,Luzhou,Sichuan 646100,China)

机构地区：[1]四川省农业科学院水稻高粱研究所/农业部西南水稻生物学与遗传育种重点实验室,四川德阳618000 [2]国家水稻改良中心四川泸州分中心,四川泸州646100

出　　处：《中国稻米》2018年第6期118-121,共4页China Rice

基　　金：四川省财政创新能力提升工程青年基金(2017QJJ-017);德阳重点科学技术研究项目(2017NZ002);水稻早;中熟亲本材料的创制与突破性新品种选育项目(2016-N-34);四川省财政创新能力提升工程专项资金(2016ZYPZ-034)

摘　　要：选用3个不育系和6个恢复系,采用3×6不完全双列杂交设计配制18个组合,对新育成三系杂交稻不育系德66A主要经济性状的配合力进行分析。结果表明,德66A在有效穗数、千粒重、结实率和单株产量性状上一般配合力(GCA)效应值明显好于赣香1A和泸香618A;所测组合中,杂交组合德66A/成恢727在有效穗数、千粒重和单株产量性状上特殊配合力(SCA)效应值均最大。18个杂交组合F1主要经济性状竞争优势大小受不育系的影响要大于恢复系。各性状狭义遗传力表现为单株产量>有效穗数>结实率>千粒重>穗长>每穗实粒数。In order to analyze the combining ability of major economic characters of three-line sterile line De 66A,18 cross combinations from 3 sterile lines and 6 restorer lines were used by the 3×6 NCII genetic mating design.The results showed that the general combing ability value(GCA)of effective panicles,1 000-grain weight,seed setting rate and grain weight per plant of De 66A were significantly higher than Ganxiang 1A and Luxiang 618A.The special combining ability value of effective panicles,1 000-grain weight and grain weight per plant of De 66A/Chenghui 727 were the highest in all of 18 hybrid combinations.18 hybrid combinations heterosis of main economic traits were greatly influenced by the sterile lines than the restorer lines.The narrow sense heritability ranged from great to small as follows:grain weight per plant,effective panicles,seed setting rate,1000-grain weight,panicle length and full grain per panicle.

关 键 词：杂交水稻 不育系 经济性状 配合力 遗传力 

分 类 号：S511.21[农业科学—作物学]