TY  - JA
AU  - Shufang Li
AU  - Chunxiao Zhang
AU  - Deguang Yang
AU  - Lu Ming
AU  - Yiliang Qian
AU  - Fengxue Jin
AU  - Xueyan Liu
AU  - Yu Wang
AU  - Wenguo Liu
AU  - Xiaohui Li
TI  - Detection of QTNs for kernel moisture concentration and kernel dehydration rate before physiological maturity in maize using multi-locus GWAS
SN  - 2045-2322
PY  - 2021///
CY  - London (United Kingdom)
PB  - Nature Publishing Group
KW  - Plant Genetics
KW  - AGROVOC
KW  - Maize
KW  - Kernels
KW  - Moisture content
KW  - Dehydration
N1  - Peer review; Open Access
N2  - Maize is China’s largest grain crop. Mechanical grain harvesting is the key technology in maize production, and the kernel moisture concentration (KMC) is the main controlling factor in mechanical maize harvesting in China. The kernel dehydration rate (KDR) is closely related to the KMC. Thus, it is important to conduct genome-wide association studies (GWAS) of the KMC and KDR in maize, detect relevant quantitative trait nucleotides (QTNs), and mine relevant candidate genes. Here, 132 maize inbred lines were used to measure the KMC every 5 days from 10 to 40 days after pollination (DAP) in order to calculate the KDR. These lines were genotyped using a maize 55K single-nucleotide polymorphism array. QTNs for the KMC and KDR were detected based on five methods (mrMLM, FASTmrMLM, FASTmrEMMA, pLARmEB, and ISIS EM-BLASSO) in the package mrMLM. A total of 334 significant QTNs were found for both the KMC and KDR, including 175 QTNs unique to the KMC and 178 QTNs unique to the KDR; 116 and 58 QTNs were detected among the 334 QTNs by two and more than two methods, respectively; and 9 and 5 QTNs among 58 QTNs were detected in 2 and 3 years, respectively. A significant enrichment in cellular component was revealed by Gene Ontology enrichment analysis of candidate genes in the intervals adjacent to the 14 QTNs and this category contained five genes. The information provided in this study may be useful for further mining of genes associated with the KMC and KDR in maize
UR  - https://doi.org/10.1038/s41598-020-80391-1
DO  - https://doi.org/10.1038/s41598-020-80391-1
T2  - Nature Scientific Reports
ER  -