We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Appraising the Genetic Architecture of Kernel Traits in Hexaploid Wheat Using GWAS.
- Authors
Muhammad, Ali; Hu, Weicheng; Li, Zhaoyang; Li, Jianguo; Xie, Guosheng; Wang, Jibin; Wang, Lingqiang
- Abstract
Kernel morphology is one of the major yield traits of wheat, the genetic architecture of which is always important in crop breeding. In this study, we performed a genome-wide association study (GWAS) to appraise the genetic architecture of the kernel traits of 319 wheat accessions using 22,905 single nucleotide polymorphism (SNP) markers from a wheat 90K SNP array. As a result, 111 and 104 significant SNPs for Kernel traits were detected using four multi-locus GWAS models (mrMLM, FASTmrMLM, FASTmrEMMA, and pLARmEB) and three single-locus models (FarmCPU, MLM, and MLMM), respectively. Among the 111 SNPs detected by the multi-locus models, 24 SNPs were simultaneously detected across multiple models, including seven for kernel length, six for kernel width, six for kernels per spike, and five for thousand kernel weight. Interestingly, the five most stable SNPs (RAC875_29540_391, Kukri_07961_503, tplb0034e07_1581, BS00074341_51, and BobWhite_049_3064) were simultaneously detected by at least three multi-locus models. Integrating these newly developed multi-locus GWAS models to unravel the genetic architecture of kernel traits, the mrMLM approach detected the maximum number of SNPs. Furthermore, a total of 41 putative candidate genes were predicted to likely be involved in the genetic architecture underlining kernel traits. These findings can facilitate a better understanding of the complex genetic mechanisms of kernel traits and may lead to the genetic improvement of grain yield in wheat.
- Subjects
PLANT breeding; WHEAT; GENETIC models; GRAIN yields; SINGLE nucleotide polymorphisms
- Publication
International Journal of Molecular Sciences, 2020, Vol 21, Issue 16, p5649
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms21165649