摘要
优异玉米自交系是玉米商业化育种的基础,配合力是评价自交系遗传力及其育种价值的重要指标。本研究以国内外14份玉米自交系按完全双列杂交设计配制的182个杂交组合及其亲本自交系为材料,对其籽粒脱水相关性状进行配合力分析,结果表明:(1)籽粒脱水速率、籽粒含水率、苞叶层数、苞叶面积在不同自交系之间差异显著,且均受环境影响;(2)配合力分析发现,Zheng12、Zheng645、PHR55、LH202作为亲本材料易配制出籽粒脱水快或成熟期籽粒含水率低的组合,尤其组合Zheng12×LH202;(3)182个杂交组合籽粒脱水相关性状的各表型值与其父母本一般配合力效应之和均呈极显著正相关。这为宜机收玉米品种遗传改良提供优异种质资源及理论依据。
Excellent inbred line serves as foundation in commercial breeding.Combining ability is an important index to evaluate the heritability and breeding value of inbred lines.By analyzing 182 hybridized combinations that derived from 14 inbred lines from home and abroad following complete diallel crossing,we analyzed the kernel dehydration related traits combining ability in maize.The results indicated that:(1)significant differences on kernel dehydration rate,kernel moisture content,husk number and husk area among different inbred lines,which were environment-dependent,(2)through combining ability analysis,we found that Zheng12,Zheng645,PHR55 and LH202 as parents can easily mate combinations with rapid kernel dehydration or low kernel moisture content at mature,especially Zheng12×LH202,(3)The phenotypic value of 182 hybridized combinations for kernel dehydration related traits were all respectively significantly positive related with the sum of their parents general combining ability.The results might provide useful resources or theoretical basis for the genetic improvement of maize varieties which are suitable for mechanical harvesting.
作者
张凤启
张君
丁勇
赵发欣
穆心愿
齐建双
谷利敏
马智艳
夏来坤
唐保军
ZHANG Feng-qi;ZHANG Jun;DING Yong;ZHAO Fa-xin;MU Xin-yuan;QI Jian-shuang;GU Li-min;MA Zhi-yan;XIA Lai-kun;TANG Bao-jun(Cereal Institute,Henan Academy of Agricultural Sciences/Henan Provincial Key Lab. of Maize Biology,Zhengzhou 450002)
出处
《植物遗传资源学报》
CAS
CSCD
北大核心
2019年第4期871-879,共9页
Journal of Plant Genetic Resources
基金
国家重点研发计划项目(2016YFD0100103)
河南省农业科学院自主创新专项基金(2019ZC09)
公益性行业(农业)科研专项(201503130)
河南省玉米产业技术体系建设项目(S2015-02-G04)~~
关键词
玉米
籽粒脱水速率
籽粒含水率
配合力
maize
kernel dehydration rate
kernel moisture content
combining ability
