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| Content Provider | frontiers |
|---|---|
| Author | Khan, Hanif Krishnappa, Gopalareddy Kumar, Satish Mishra, Chandra Nath Krishna, Hari Devate, Narayana Bhat Rathan, Nagenahalli Dharmegowda Parkash, Om Yadav, Sonu Singh Srivastava, Puja Biradar, Suma Kumar, Monu Singh, Gyanendra Pratap |
| Abstract | Genomic regions governing days to heading (DH), grain filling duration (GFD), grain number per spike (GNPS), grain weight per spike (GWPS), plant height (PH), and grain yield (GY) were investigated in a set of 280 diverse bread wheat genotypes. The genome-wide association (GWAS) panel was genotyped using a 35K Axiom Array and phenotyped in five environments. The GWAS analysis showed a total of 27 Bonferroni-corrected marker-trait associations (MTAs) on 15 chromosomes representing all three wheat subgenomes. The GFD showed the highest MTAs (8), followed by GWPS (7), GY (4), GNPS (3), PH (3), and DH (2). Furthermore, 20 MTAs were identified with more than 10% phenotypic variation. A total of five stable MTAs (AX-95024590, AX-94425015, AX-95210025 AX-94539354, and AX-94978133) were identified in more than one environment and associated with the expression of DH, GFD, GNPS, and GY. Similarly, two novel pleiotropic genomic regions with associated MTAs i.e. AX-94978133 (4D) and AX-94539354 (6A) harboring co-localized QTLs governing two or more traits were also identified. In silico analysis revealed that the SNPs were located on important putative candidate genes such as F-box-like domain superfamily, Lateral organ boundaries, LOB, Thioredoxin-like superfamily Glutathione S-transferase, RNA-binding domain superfamily, UDP-glycosyltransferase family, Serine/threonine-protein kinase, Expansin, Patatin, Exocyst complex component Exo70, DUF1618 domain, Protein kinase domain involved in the regulation of grain size, grain number, growth and development, grain filling duration, and abiotic stress tolerance. The identified novel MTAs will be validated to estimate their effects in different genetic backgrounds for subsequent use in marker-assisted selection (MAS). |
| ISSN | 16648021 |
| DOI | 10.3389/fgene.2022.982589 |
| Volume Number | 13 |
| Journal | Frontiers in Genetics |
| Language | English |
| Publisher Date | 2022-08-26 |
| Access Restriction | Open |
| Subject Keyword | Wheat Mapping GWAS Snps Candidate genes |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Molecular Medicine Genetics (clinical) |
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