Genome-wide association studies of yield-related traits in high-latitude japonica rice
Related Experiment Video
Updated: Oct 18, 2025

Identifying Mutations by High Resolution Melting in a TILLING Population of Rice
Published on: September 2, 2019
Guomin Zhang1,2, Rongsheng Wang1,2, Juntao Ma1,2
1Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin, China.
Background:
Heilongjiang Province is a high-quality japonica rice cultivation area in China. One in ten bowls of Chinese rice is produced here. Increasing yield is one of the main aims of rice production in this area. However, yield is a complex quantitative trait composed of many factors. The purpose of this study was to determine how many genetic loci are associated with yield-related traits. Genome-wide association studies (GWAS) were performed on 450 accessions collected from northeast Asia, including Russia, Korea, Japan and Heilongjiang Province of China. These accessions consist of elite varieties and landraces introduced into Heilongjiang Province decade ago.
Results:
After resequencing of the 450 accessions, 189,019 single nucleotide polymorphisms (SNPs) were used for association studies by two different models, a general linear model (GLM) and a mixed linear model (MLM), examining four traits: days to heading (DH), plant height (PH), panicle weight (PW) and tiller number (TI). Over 25 SNPs were found to be associated with each trait. Among them, 22 SNPs were selected to identify candidate genes, and 2, 8, 1 and 11 SNPs were found to be located in 3' UTR region, intron region, coding region and intergenic region, respectively.
Conclusions:
All SNPs detected in this research may become candidates for further fine mapping and may be used in the molecular breeding of high-latitude rice.
More Related Videos
07:18Obtaining High-Quality Transcriptome Data from Cereal Seeds by a Modified Method for Gene Expression Profiling
Published on: May 21, 2020
05:22Transverse Sectioning of Mature Rice Oryza sativa L. Kernels for Scanning Electron Microscopy Imaging Using Pipette Tips as Immobilization Support
Published on: January 25, 2022
Related Concept Videos
Genome-wide Association Studies-GWAS
GWAS does not require the identification of the target gene involved in...
Polygenic Traits
Heritability
Light Acquisition
Wilcoxon Signed-Ranks Test for Median of Single Population