Dissecting the genetic architecture of lodging related traits by genome-wide association study and linkage analysis in maize

Lodging is one of the main factors affecting the grain yield and mechanized harvesting in maize. Dissecting the genetic basis of lodging related traits can provide a theoretical basis for high yield and mechanized harvest breeding of maize. In this study, genome-wide association study(GWAS) and link...

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Published inZuo wu xue bao Vol. 48; no. 1; p. 138
Main Authors Yu, Rui-Su, Tian, Xiao-Kang, Liu, Bin-Bin, Duan, Ying-Xin, Li, Ting, Zhang, Xiu-Ying, Zhang, Xing-Hua, Hao, Yin-Chuan, Li, Qin, Xue, Ji-Quan, Xu, Shu-Tu
Format Journal Article
LanguageChinese
Published Beijing Chinese Academy of Agricultural Sciences (CAAS) 01.01.2022
Subjects
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Association analysis
Biosynthesis
Cell division
Cell walls
Corn
Crop yield
Elongation
Genetic analysis
Genome-wide association studies
Genomes
Inbreeding
Intervals
Linkage analysis
Lodging
Phenotypic variations
Plant breeding
Quantitative trait loci
Single-nucleotide polymorphism
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Summary:Lodging is one of the main factors affecting the grain yield and mechanized harvesting in maize. Dissecting the genetic basis of lodging related traits can provide a theoretical basis for high yield and mechanized harvest breeding of maize. In this study, genome-wide association study(GWAS) and linkage analysis were combined to identify the significant loci interrelated with lodging related traits using 153 inbred lines from China and abroad. We detected 5, 14, 16, and 21 SNPs significant SNPs related to stem strength, plant height, ear height, and ear height-to-plant height ratio, respectively. Among these significant SNPs,the maximum effect value of a single site was 13.24. Twenty-one QTLs related to lodging related traits were identified by linkage analysis, which explaining the phenotypic variations of 3.86%–16.58% in F5 population constructed by KA105 and KB020. Further, we noticed that two QTL intervals were coincided with the candidate intervals of association analysis. Finally,GRMZM2 G105391, GRMZM2 G
ISSN:0496-3490