scholarly journals Genome-Wide Association Study Reveals Novel Genes Associated with Culm Cellulose Content in Bread Wheat (Triticum aestivum, L.)

2017 ◽  
Vol 8 ◽  
Author(s):  
Simerjeet Kaur ◽  
Xu Zhang ◽  
Amita Mohan ◽  
Haixiao Dong ◽  
Prashant Vikram ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Association Study ◽  
Bread Wheat ◽  
Genome Wide Association Study ◽  
Triticum Aestivum L ◽  
Genome Wide Association ◽  
Cellulose Content ◽  
Novel Genes ◽  
Genome Wide

Genome‐wide association study reveals loci associated with seed longevity in common wheat ( Triticum aestivum L.)

2019 ◽  
Vol 139 (2) ◽  
pp. 295-303 ◽  
Author(s):  
Jing Hong Zuo ◽  
Feng Ying Chen ◽  
Xiao Ying Li ◽  
Xian Chun Xia ◽  
Hong Cao ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Association Study ◽  
Common Wheat ◽  
Genome Wide Association Study ◽  
Triticum Aestivum L ◽  
Seed Longevity ◽  
Genome Wide Association ◽  
Genome Wide

scholarly journals Genome-wide association study for anther length in some elite bread wheat germplasm

2018 ◽  
Vol 54 (No. 3) ◽  
pp. 109-114 ◽  
Author(s):  
Song Xiaopeng ◽  
Feng Jie ◽  
Cui Zixia ◽  
Zhang Chuanliang ◽  
Sun Daojie
Keyword(s):  
Association Study ◽  
Bread Wheat ◽  
Genome Wide Association Study ◽  
Snp Array ◽  
Pollen Grains ◽  
Triticum Aestivum L ◽  
Genome Wide Association ◽  
Genome Wide ◽  
Anther Length ◽  
A Genome

The anther is a crucial organ for the development of the spike in bread wheat (Triticum aestivum L.). Long anthers contain large amounts of pollen grains; thus, they are favourable for cross-pollination and increase resilience against adverse environmental conditions. We conducted a genome-wide association study (GWAS) of anther length in 305 elite wheat lines evaluated during 2013–2015 in two locations and two growing seasons. The mapping panel was genotyped using a high-density Illumina iSelect 90K single nucleotide polymorphism (SNP) array. The GWAS used 18763 SNPs and identified 17 markers associated with anther length in wheat. The loci were mainly distributed across the chromosomes 3A, 3B and 7B. Further studies are required to determine if these are candidate genomic regions of anther length. In addition, anther length had high heritability, and positive correlations between anther length and grain weight per spike were observed.  

scholarly journals Multi-locus genome-wide association mapping for spike-related traits in bread wheat (Triticum aestivum L.)

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Parveen Malik ◽  
Jitendra Kumar ◽  
Shiveta Sharma ◽  
Rajiv Sharma ◽  
Shailendra Sharma
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Genome Wide Association Study ◽  
Triticum Aestivum L ◽  
Genome Wide Association ◽  
Yield Potential ◽  
Genome Wide ◽  
Spike Development ◽  
Global Population ◽  
Combined Data

Abstract Background Bread wheat (Triticum aestivum L.) is one of the most important cereal food crops for the global population. Spike-layer uniformity (the consistency of the spike distribution in the vertical space)-related traits (SLURTs) are quantitative and have been shown to directly affect yield potential by modifying the plant architecture. Therefore, these parameters are important breeding targets for wheat improvement. The present study is the first genome-wide association study (GWAS) targeting SLURTs in wheat. In this study, a set of 225 diverse spring wheat accessions were used for multi-locus GWAS to evaluate SLURTs, including the number of spikes per plant (NSPP), spike length (SL), number of spikelets per spike (NSPS), grain weight per spike (GWPS), lowest tiller height (LTH), spike-layer thickness (SLT), spike-layer number (SLN) and spike-layer uniformity (SLU). Results In total, 136 significant marker trait associations (MTAs) were identified when the analysis was both performed individually and combined for two environments. Twenty-nine MTAs were detected in environment one, 48 MTAs were discovered in environment two and 59 MTAs were detected using combined data from the two environments. Altogether, 15 significant MTAs were found for five traits in one of the two environments, and four significant MTAs were detected for the two traits, LTH and SLU, in both environments i.e. E1, E2 and also in combined data from the two environments. In total, 279 candidate genes (CGs) were identified, including Chaperone DnaJ, ABC transporter-like, AP2/ERF, SWEET sugar transporter, as well as genes that have previously been associated with wheat spike development, seed development and grain yield. Conclusions The MTAs detected through multi-locus GWAS will be useful for improving SLURTs and thus yield in wheat production through marker-assisted and genomic selection.

scholarly journals Genome-Wide Association Study Reveals the Genetic Architecture for Calcium Accumulation in Grains of Hexaploid Wheat (Triticum Aestivum L.)

2021 ◽  
Author(s):  
Xia Shi ◽  
Zhengfu Zhou ◽  
Wenxu Li ◽  
Maomao Qin ◽  
Pan Yang ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Association Study ◽  
Hexaploid Wheat ◽  
Genetic Architecture ◽  
Genome Wide Association Study ◽  
Triticum Aestivum L ◽  
Genome Wide Association ◽  
Wheat Grain ◽  
Genome Wide ◽  
A Genome

Abstract Background: Hexaploid wheat (Triticum aestivum L.) is a leading cereal crop worldwide. Understanding the mechanism of calcium (Ca) accumulation in wheat is important to reduce the risk of human micronutrient deficiencies. However, the mechanisms of Ca accumulation in wheat grain are only partly understood. Results: Here, we performed a genome-wide association study to identify the genetic basis of Ca accumulation in wheat grain using an association population consisting of 207 varieties, with phenotypic data from three locations and the combined locations. In total, 18 non-redundant quantitative trait loci (QTLs) associated with Ca concentration were identified that explained, on average, 9.61%–26.93% of the phenotypic variation. Cultivars containing more superior alleles and fewer inferior alleles had increased grain Ca concentrations. Notably, six non-redundant loci were identified in at least two environments, indicating their stability across different environments. Searches of public databases revealed six putative candidate genes linked to Ca accumulation. Among them, two subunits of V-type Proton ATPase (TraesCS4A01G428900 and TraesCS3B01G241000) are encoded by genes associated with stable genetic loci on chromosomes 4A (AX-108912427) and 3B (AX-110922471), respectively, and they are typical generators of a proton gradient that might be involved in Ca homeostasis in wheat grain.Conclusion: This study could increases our understanding of the genetic architecture of grain Ca accumulation in wheat, and we plan to develop the identified superior alleles into molecular markers for wheat Ca biofortification pyramid breeding in the future.

scholarly journals Novel genes identified in a high-density genome wide association study for nicotine dependence

2006 ◽  
Vol 16 (1) ◽  
pp. 24-35 ◽  
Author(s):  
Laura Jean Bierut ◽  
Pamela A.F. Madden ◽  
Naomi Breslau ◽  
Eric O. Johnson ◽  
Dorothy Hatsukami ◽  
...  
Keyword(s):  
Association Study ◽  
Nicotine Dependence ◽  
Genome Wide Association Study ◽  
High Density ◽  
Genome Wide Association ◽  
Novel Genes ◽  
Genome Wide

scholarly journals Finding Novel Genes by Testing G × E Interactions in a Genome-Wide Association Study

2013 ◽  
Vol 37 (6) ◽  
pp. 603-613 ◽  
Author(s):  
W. James Gauderman ◽  
Pingye Zhang ◽  
John L. Morrison ◽  
Juan Pablo Lewinger
Keyword(s):  
Association Study ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Novel Genes ◽  
Genome Wide ◽  
A Genome
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