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Genome-Wide Association Mapping of Dark Green Color Index using a Diverse Panel of Soybean Accessions
- Source :
- Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020), Scientific Reports
- Publication Year :
- 2020
- Publisher :
- Nature Publishing Group, 2020.
-
Abstract
- Nitrogen (N) plays a key role in plants because it is a major component of RuBisCO and chlorophyll. Hence, N is central to both the dark and light reactions of photosynthesis. Genotypic variation in canopy greenness provides insights into the variation of N and chlorophyll concentration, photosynthesis rates, and N2 fixation in legumes. The objective of this study was to identify significant loci associated with the intensity of greenness of the soybean [Glycine max (L.) Merr.] canopy as determined by the Dark Green Color Index (DGCI). A panel of 200 maturity group IV accessions was phenotyped for canopy greenness using DGCI in three environments. Association mapping identified 45 SNPs that were significantly (P ≤ 0.0003) associated with DGCI in three environments, and 16 significant SNPs associated with DGCI averaged across all environments. These SNPs likely tagged 43 putative loci. Out of these 45 SNPs, eight were present in more than one environment. Among the identified loci, 21 were located in regions previously reported for N traits and ureide concentration. Putative loci that were coincident with previously reported genomic regions may be important resources for pyramiding favorable alleles for improved N and chlorophyll concentrations, photosynthesis rates, and N2 fixation in soybean.
- Subjects :
- Agricultural genetics
Chlorophyll
0106 biological sciences
0301 basic medicine
Canopy
Linkage disequilibrium
Genotype
Nitrogen
Plant physiology
Quantitative Trait Loci
Plant genetics
lcsh:Medicine
Quantitative trait locus
Photosynthesis
Polymorphism, Single Nucleotide
01 natural sciences
Article
Linkage Disequilibrium
03 medical and health sciences
chemistry.chemical_compound
Gene Frequency
Botany
Association mapping
lcsh:Science
Alleles
Multidisciplinary
biology
RuBisCO
lcsh:R
Fabaceae
Plant Leaves
Natural variation in plants
Phenotype
030104 developmental biology
chemistry
biology.protein
lcsh:Q
Soybeans
Genome, Plant
Genome-Wide Association Study
010606 plant biology & botany
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 10
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....af568b4b5c154877263545affc575c14
- Full Text :
- https://doi.org/10.1038/s41598-020-62034-7