Genome-wide association studies of grain quality traits in maize

Abstract 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 polymor...

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Main Authors: Yunxiao Zheng, Fan Yuan, Yaqun Huang, Yongfeng Zhao, Xiaoyan Jia, Liying Zhu, Jinjie Guo
Format: Article
Language:English
Published: Nature Portfolio 2021-05-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-021-89276-3
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author Yunxiao Zheng
Fan Yuan
Yaqun Huang
Yongfeng Zhao
Xiaoyan Jia
Liying Zhu
Jinjie Guo
author_facet Yunxiao Zheng
Fan Yuan
Yaqun Huang
Yongfeng Zhao
Xiaoyan Jia
Liying Zhu
Jinjie Guo
author_sort Yunxiao Zheng
collection DOAJ
description Abstract 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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spelling doaj.art-1f887a50c2404c1f9e55287555f7b8992022-12-21T22:55:22ZengNature PortfolioScientific Reports2045-23222021-05-0111111210.1038/s41598-021-89276-3Genome-wide association studies of grain quality traits in maizeYunxiao Zheng0Fan Yuan1Yaqun Huang2Yongfeng Zhao3Xiaoyan Jia4Liying Zhu5Jinjie Guo6College of Agronomy, Hebei Agricultural UniversityCollege of Agronomy, Hebei Agricultural UniversityCollege of Agronomy, Hebei Agricultural UniversityCollege of Agronomy, Hebei Agricultural UniversityCollege of Agronomy, Hebei Agricultural UniversityCollege of Agronomy, Hebei Agricultural UniversityCollege of Agronomy, Hebei Agricultural UniversityAbstract 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.https://doi.org/10.1038/s41598-021-89276-3
spellingShingle Yunxiao Zheng
Fan Yuan
Yaqun Huang
Yongfeng Zhao
Xiaoyan Jia
Liying Zhu
Jinjie Guo
Genome-wide association studies of grain quality traits in maize
Scientific Reports
title Genome-wide association studies of grain quality traits in maize
title_full Genome-wide association studies of grain quality traits in maize
title_fullStr Genome-wide association studies of grain quality traits in maize
title_full_unstemmed Genome-wide association studies of grain quality traits in maize
title_short Genome-wide association studies of grain quality traits in maize
title_sort genome wide association studies of grain quality traits in maize
url https://doi.org/10.1038/s41598-021-89276-3
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