Genotyping-by-sequencing derived SNP markers reveal genetic diversity and population structure of Dactylis glomerata germplasm DOI Creative Commons
Muhammad Tanveer Altaf, Pablo F. Cavagnaro, Kağan KÖKTEN

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 6, 2025

Orchardgrass (Dactylis glomerata L.), a widely cultivated cool-season perennial, is an important forage crop due to its adaptability, high nutritional value, and substantial biomass. Understanding genetic diversity population structure crucial for developing resilient cultivars that can withstand climate change, diseases, resource limitations. Despite global significance in fodder production, the potential of many regional accessions remains unexplored, limiting breeding efforts. This study investigates (GD) 91 D. from Turkey Iran using genotyping-by-sequencing based single nucleotide polymorphism (SNP) markers. A total 2913 high-quality SNP markers revealed variability across provinces. Notably, Erzurum exhibited highest GD (mean GD: 0.26; He: 0.5328), while provinces such as Bursa Muğla demonstrated lower 0.15; He < 0.22), suggesting bottlenecks. Population analysis Bayesian clustering, PCoA UPGMA dendrograms divided into three distinct clusters, with cluster membership largely reflecting geographical origins, dry biomass content. Cluster II higher GD, associated enhanced production (128 g/plant), most agronomic trait species, supporting notion heterosis programs. The majority variation (85.8%) was observed within minimal differentiation among clusters (FST = 0.007). Genome-wide association studies (GWAS) identified significant marker-trait associations weight, critical trait, DArT-100715788, DArT-101043591, DArT-101171265 DArT-101090822 located on Chromosomes 1, 6, 7 respectively. These findings highlight importance maintaining adaptive future

Language: Английский

Genotyping-by-sequencing derived SNP markers reveal genetic diversity and population structure of Dactylis glomerata germplasm DOI Creative Commons
Muhammad Tanveer Altaf, Pablo F. Cavagnaro, Kağan KÖKTEN

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 6, 2025

Orchardgrass (Dactylis glomerata L.), a widely cultivated cool-season perennial, is an important forage crop due to its adaptability, high nutritional value, and substantial biomass. Understanding genetic diversity population structure crucial for developing resilient cultivars that can withstand climate change, diseases, resource limitations. Despite global significance in fodder production, the potential of many regional accessions remains unexplored, limiting breeding efforts. This study investigates (GD) 91 D. from Turkey Iran using genotyping-by-sequencing based single nucleotide polymorphism (SNP) markers. A total 2913 high-quality SNP markers revealed variability across provinces. Notably, Erzurum exhibited highest GD (mean GD: 0.26; He: 0.5328), while provinces such as Bursa Muğla demonstrated lower 0.15; He < 0.22), suggesting bottlenecks. Population analysis Bayesian clustering, PCoA UPGMA dendrograms divided into three distinct clusters, with cluster membership largely reflecting geographical origins, dry biomass content. Cluster II higher GD, associated enhanced production (128 g/plant), most agronomic trait species, supporting notion heterosis programs. The majority variation (85.8%) was observed within minimal differentiation among clusters (FST = 0.007). Genome-wide association studies (GWAS) identified significant marker-trait associations weight, critical trait, DArT-100715788, DArT-101043591, DArT-101171265 DArT-101090822 located on Chromosomes 1, 6, 7 respectively. These findings highlight importance maintaining adaptive future

Language: Английский

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