ArticleBMC plant biology2021
Identification of quantitative trait nucleotides and candidate genes for tuber yield and mosaic virus tolerance in an elite population of white guinea yam (Dioscorea rotundata) using genome-wide association scan.
Article in BMC plant biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed.
- Genome-wide association identifies and validates genomic region controlling grain yield and agronomic traits in extra-early orange maize inbred lines under drought.Scientific reports · 2026Article
- Genetic enhancement of root, tuber and cereal crops via pangenomics, multi-omics integration and AI-driven prediction.Frontiers in plant science · 2026Review
- Advances and prospects of genomic-assisted breeding in roots, tubers, and banana crops.Frontiers in plant science · 2026Review
- Genome-wide association study revealed genomic regions associated with tuber quality traits in water yam (Dioscorea alata L.).PloS one · 2026Article
- Identification and analysis of genomic regions influencing leaf morpho-physiological traits related to stress responses in greater yam (Dioscorea alata L.).BMC plant biology · 2025Article
- Genome wide association studies in yam reveal the challenge of high heterozygosity.Scientific reports · 2025Article
- Quantifying genetic variability and genotype ranking for food quality attributes in white Guinea yam (Frontiers in plant science · 2025Article
- Genome-wide association analysis and transgenic characterization for amylose content regulating gene in tuber of Dioscorea zingiberensis.BMC plant biology · 2024Article
- Identification of yam mosaic virus as the main cause of yam mosaic diseases in Ethiopia.Heliyon · 2024Article
- Exploring the genetic diversity and population structure of aerial yams (Dioscorea bulbifera L.) DArT-seq and agronomic traits.PloS one · 2024Article
- Association mapping in multiple yam species (Dioscorea spp.) of quantitative trait loci for yield-related traits.BMC plant biology · 2023Article
- Variability and genetic merits of white Guinea yam landraces in Nigeria.Frontiers in plant science · 2023Article
- Genome-wide association mapping for yield-related traits in soybean (Glycine max) under well-watered and drought-stressed conditions.Frontiers in plant science · 2023Article
- Genome-wide association analysis revealed genetic variation and candidate genes associated with the yield traits of upland cotton under drought conditions.Frontiers in plant science · 2023Article
- Article
- Diversity of Water Yam (Plants (Basel, Switzerland) · 2021Article
- Review
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4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundImprovement of tuber yield and tolerance to viruses are priority objectives in white Guinea yam breeding programs. However, phenotypic selection for these traits is quite challenging due to phenotypic plasticity and cumbersome screening of phenotypic-induced variations. This study assessed quantitative trait nucleotides (QTNs) and the underlying candidate genes related to tuber yield per plant (TYP) and yam mosaic virus (YMV) tolerance in a panel of 406 white Guinea yam (Dioscorea rotundata) breeding lines using a genome-wide association study (GWAS).
resultsPopulation structure analysis using 5,581 SNPs differentiated the 406 genotypes into seven distinct sub-groups based delta K. Marker-trait association (MTA) analysis using the multi-locus linear model (mrMLM) identified seventeen QTN regions significant for TYP and five for YMV with various effects. The seveteen QTNs were detected on nine chromosomes, while the five QTNs were identified on five chromosomes. We identified variants responsible for predicting higher yield and low virus severity scores in the breeding panel through the marker-effect prediction. Gene annotation for the significant SNP loci identified several essential putative genes associated with the growth and development of tuber yield and those that code for tolerance to mosaic virus.
conclusionApplication of different multi-locus models of GWAS identified 22 QTNs. Our results provide valuable insight for marker validation and deployment for tuber yield and mosaic virus tolerance in white yam breeding. The information on SNP variants and genes from the present study would fast-track the application of genomics-informed selection decisions in breeding white Guinea yam for rapid introgression of the targeted traits through markers validation.
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