Genome-wide association studies of grain quality traits in maize

High quality is the main goal of today’s maize breeding and the investigation of grain quality traits would help to breed high-quality varieties in maize. In this study, genome-wide association studies in a set of 248 diverse inbred lines were performed with 83,057 single nucleotide polymorphisms (S...

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Bibliographic Details
Published in:Scientific reports Vol. 11; no. 1; pp. 9797 - 12
Main Authors: Zheng, Yunxiao, Yuan, Fan, Huang, Yaqun, Zhao, Yongfeng, Jia, Xiaoyan, Zhu, Liying, Guo, Jinjie
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 07.05.2021
Nature Publishing Group
Nature Portfolio
Subjects:
631/208
631/337
Corn
Genome-wide association studies
Genome-Wide Association Study
Genomes
Heritability
Humanities and Social Sciences
Inbreeding
multidisciplinary
Plant Breeding
Polymorphism, Single Nucleotide
Quantitative Trait, Heritable
Science
Science (multidisciplinary)
Seeds - genetics
Single-nucleotide polymorphism
Zea mays - genetics
ISSN:2045-2322, 2045-2322
Online Access:Get full text
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Summary:High quality is the main goal of today’s maize breeding and the investigation of grain quality traits would help to breed high-quality varieties in maize. In this study, genome-wide association studies in a set of 248 diverse inbred lines were performed with 83,057 single nucleotide polymorphisms (SNPs), and five grain quality traits were investigated in diverse environments for two years. The results showed that maize inbred lines showed substantial natural variations of grain quality and these traits showed high broad-sense heritability. A total of 49 SNPs were found to be significantly associated with grain quality traits. Among these SNPs, four co-localized sites were commonly detected by multiple traits. The candidate genes which were searched for can be classified into 11 biological processes, 13 cellular components, and 6 molecular functions. Finally, we found 29 grain quality-related genes. These genes and the SNPs identified in the study would offer essential information for high-quality varieties breeding programs in maize.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-89276-3