玉米甜糯双隐性DH系品质及产量性状的配合力与遗传特性  

Combining Ability and Hereditary Character of Quality and Yield Traits of Sweet-waxy Maize Double Recessive DH Lines

作　　者：张垚[1] 杨跃华[1] 孔亮亮[1] 刘俊峰[1] 崔阳 宋俏姮 ZHANG Yao;YANG Yuehua;KONG Liangliang;LIU Junfeng;CUI Yang;SONG Qiaoheng(Institute of Rice and Sorghum,Sichuan Academy of Agricultural Sciences,Deyang,Sichuan 618000,China)

机构地区：[1]四川省农业科学院水稻高粱研究所,四川德阳618000

出　　处：《贵州农业科学》2021年第2期7-10,共4页Guizhou Agricultural Sciences

基　　金：四川省科技创新苗子工程“基于单倍体育种技术的甜糯双隐性DH系创制”(2018083);德阳市重点科技计划项目“早熟优质鲜食甜糯玉米新品种选育”(2018NZN047);四川省农业科学院水稻高粱研究所青年基金专项“两种不同遗传标记型诱导系在鲜食玉米育种中的利用研究”;四川省财政创新能力提升工程“甜糯玉米种质资源创新及新品种培育”(2016ZYPZ-037)。

摘　　要：【目的】为玉米甜糯双隐性DH系(由单倍体加倍获得的双单倍体)的利用和甜糯玉米品种的选育提供理论基础。【方法】选取4个糯玉米自交系作母本,6个甜糯双隐性DH系作父本,按NCⅡ试验设计,组配24个甜糯组合,分析皮渣率、支链淀粉含量和单穗鲜重的配合力效应和遗传特性。【结果】皮渣率、支链淀粉含量和单穗鲜重3个性状在组合间存在极显著差异;皮渣率、支链淀粉含量、单穗鲜重的广义遗传力分别为64.85%、79.59%和70.13%,狭义遗传力分别为42.33%、46.87%和43.45%。【结论】DH4、DH3为综合性状优良的DH系,皮渣率、支链淀粉含量、单穗鲜重受加性基因和非加性基因的共同影响,以加性基因为主;3个性状狭义遗传力均较低,不宜进行早代选择。【Objective】The paper is to provide the theoretical basis for utilization of sweet-waxy maize double recessive DH lines(double haploid obtained by doubling of haploid)and breeding of sweet-waxy maize variety.【Method】Four waxy maize inbred lines are selected as female parent,and six sweet-waxy double recessive DH lines are selected as male parent.24 sweet-waxy combinations are matched according to NCⅡtest design to analyze the combining ability effect and hereditary characters of residue rate,amylopectin content and fresh weight per spike.【Result】There is a very significant difference among combinations of three traits including residue rate,amylopectin content and fresh weight per spike.The generalized heritability of residue rate,amylopectin content and fresh weight per spike is 64.85%,79.59%and 70.13%,while the narrow heritability is 42.33%,46.87%and 43.45%respectively.【Conclusion】DH4 and DH3 are the DH line with excellent comprehensive traits.Residue rate,amylopectin content and fresh weight per spike are jointly affected by additive gene and non-additive gene,mainly affecting by additive gene.The narrow heritability of three traits is low,which means the early generation selection is not appropriate.

关 键 词：甜糯玉米 双单倍体 品质 产量 配合力 遗传特性 

分 类 号：S513[农业科学—作物学]