Genome-wide association studies of grain quality traits in maize

被引：36
作者：
Zheng, Yunxiao [1 ,2 ,3 ]
Yuan, Fan [1 ,2 ,3 ]
Huang, Yaqun [1 ,2 ,3 ]
Zhao, Yongfeng [1 ,2 ,3 ]
Jia, Xiaoyan [1 ,2 ,3 ]
Zhu, Liying [1 ,2 ,3 ]
Guo, Jinjie [1 ,2 ,3 ]
机构：
[1] Hebei Agr Univ, Coll Agron, Baoding 071001, Hebei, Peoples R China
[2] Natl Maize Improvement Ctr, Hebei Subctr, Baoding 071001, Hebei, Peoples R China
[3] State Key Lab North China Crop Improvement & Regu, Baoding 071001, Hebei, Peoples R China
来源：
SCIENTIFIC REPORTS | 2021年 / 11卷 / 01期
关键词：
STARCH CONTENT; KERNEL OIL; IDENTIFICATION; PROTEIN; GENE; QTL; POPULATIONS; INCREASES; SEQUENCE; F-23;
D O I：
10.1038/s41598-021-89276-3
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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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页数：12
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