scholarly journals Genome-wide association analyses reveal complex genetic architecture underlying natural variation for flowering time in canola

2016 ◽  
Vol 39 (6) ◽  
pp. 1228-1239 ◽  
Author(s):  
H. Raman ◽  
R. Raman ◽  
N. Coombes ◽  
J. Song ◽  
R. Prangnell ◽  
...  
Keyword(s):  
Flowering Time ◽  
Genetic Architecture ◽  
Natural Variation ◽  
Genome Wide Association ◽  
Association Analyses ◽  
Genome Wide

scholarly journals Unraveling the genetic architecture for carbon and nitrogen related traits and leaf hydraulic conductance in soybean using genome-wide association analyses

BMC Genomics ◽  
2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Clinton J. Steketee ◽  
Thomas R. Sinclair ◽  
Mandeep K. Riar ◽  
William T. Schapaugh ◽  
Zenglu Li
Keyword(s):  
Drought Stress ◽  
Genetic Architecture ◽  
Isotope Composition ◽  
Nitrogen Concentration ◽  
Hydraulic Conductance ◽  
Genome Wide Association ◽  
Association Analyses ◽  
Carbon And Nitrogen ◽  
Leaf Hydraulic Conductance ◽  
Genome Wide

Abstract Background Drought stress is a major limiting factor of soybean [Glycine max (L.) Merr.] production around the world. Soybean plants can ameliorate this stress with improved water-saving, sustained N2 fixation during water deficits, and/or limited leaf hydraulic conductance. In this study, carbon isotope composition (δ13C), which can relate to variation in water-saving capability, was measured. Additionally, nitrogen isotope composition (δ15N) and nitrogen concentration that relate to nitrogen fixation were evaluated. Decrease in transpiration rate (DTR) of de-rooted soybean shoots in a silver nitrate (AgNO3) solution compared to deionized water under high vapor pressure deficit (VPD) conditions was used as a surrogate measurement for limited leaf hydraulic conductance. A panel of over 200 genetically diverse soybean accessions genotyped with the SoySNP50K iSelect BeadChips was evaluated for the carbon and nitrogen related traits in two field environments (Athens, GA in 2015 and 2016) and for transpiration response to AgNO3 in a growth chamber. A multiple loci linear mixed model was implemented in FarmCPU to perform genome-wide association analyses for these traits. Results Thirty two, 23, 26, and nine loci for δ13C, δ15N, nitrogen concentration, and transpiration response to AgNO3, respectively, were significantly associated with these traits. Candidate genes that relate to drought stress tolerance enhancement or response were identified near certain loci that could be targets for improving and understanding these traits. Soybean accessions with favorable breeding values were also identified. Low correlations were observed between many of the traits and the genetic loci associated with each trait were largely unique, indicating that these drought tolerance related traits are governed by different genetic loci. Conclusions The genomic regions and germplasm identified in this study can be used by breeders to understand the genetic architecture for these traits and to improve soybean drought tolerance. Phenotyping resources needed, trait heritability, and relationship to the target environment should be considered before deciding which of these traits to ultimately employ in a specific breeding program. Potential marker-assisted selection efforts could focus on loci which explain the greatest amount of phenotypic variation for each trait, but may be challenging due to the quantitative nature of these traits.

scholarly journals Genome-wide association study reveals the genetic architecture of flowering time in rapeseed (Brassica napus L.)

DNA Research ◽  
2015 ◽  
pp. dsv035 ◽  
Author(s):  
Liping Xu ◽  
Kaining Hu ◽  
Zhenqian Zhang ◽  
Chunyun Guan ◽  
Song Chen ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Association Study ◽  
Flowering Time ◽  
Genetic Architecture ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Brassica Napus L ◽  
Genome Wide

scholarly journals Genome-wide association analyses identify 44 risk variants and refine the genetic architecture of major depression

2018 ◽  
Vol 50 (5) ◽  
pp. 668-681 ◽  
Author(s):  
Naomi R. Wray ◽  
◽  
Stephan Ripke ◽  
Manuel Mattheisen ◽  
Maciej Trzaskowski ◽  
...  
Keyword(s):  
Major Depression ◽  
Genetic Architecture ◽  
Genome Wide Association ◽  
Association Analyses ◽  
Risk Variants ◽  
Genome Wide

Genome-wide association analyses provide genetic and biochemical insights into natural variation in rice metabolism

2014 ◽  
Vol 46 (7) ◽  
pp. 714-721 ◽  
Author(s):  
Wei Chen ◽  
Yanqiang Gao ◽  
Weibo Xie ◽  
Liang Gong ◽  
Kai Lu ◽  
...  
Keyword(s):  
Natural Variation ◽  
Genome Wide Association ◽  
Association Analyses ◽  
Genome Wide

scholarly journals The Complex Genetic Architecture of Early Root and Shoot Traits in Flax Revealed by Genome-Wide Association Analyses

2019 ◽  
Vol 10 ◽  
Author(s):  
Demissew Sertse ◽  
Frank M. You ◽  
Sridhar Ravichandran ◽  
Sylvie Cloutier
Keyword(s):  
Genetic Architecture ◽  
Genome Wide Association ◽  
Association Analyses ◽  
Genome Wide ◽  
Root And Shoot Traits

scholarly journals Genetic Architecture of Natural Variation in Rice Chlorophyll Content Revealed by a Genome-Wide Association Study

2015 ◽  
Vol 8 (6) ◽  
pp. 946-957 ◽  
Author(s):  
Quanxiu Wang ◽  
Weibo Xie ◽  
Hongkun Xing ◽  
Ju Yan ◽  
Xiangzhou Meng ◽  
...  
Keyword(s):  
Association Study ◽  
Chlorophyll Content ◽  
Genetic Architecture ◽  
Natural Variation ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Genome Wide ◽  
A Genome
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