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- W2900615759 abstract "Abstract Grain yield is a trait of paramount importance in the breeding of all cereals. In wheat ( Triticum aestivum L.), yield has steadily increased since the Green Revolution, though the current rate of increase is not forecasted to keep pace with demand due to growing world population and affluence. While several genome-wide association studies (GWAS) on yield and related component traits have been performed in wheat, the previous lack of a reference genome has made comparisons between studies difficult. In this study, a GWAS for yield and yield-related traits was carried out on a population of 324 soft red winter wheat lines across a total of four rain-fed environments in the state of Virginia using single-nucleotide polymorphism (SNP) marker data generated by a genotyping-by-sequencing (GBS) protocol. Two separate mixed linear models were used to identify significant marker-trait associations (MTAs). The first was a single-locus model utilizing a leave-one-chromosome-out approach to estimating kinship. The second was a sub-setting kinship multi-locus method (FarmCPU). The single-locus model identified nine significant MTAs for various yield-related traits, while the FarmCPU model identified 74 significant MTAs. The availability of the wheat reference genome allowed for the description of MTAs in terms of both genetic and physical positions, and enabled more extensive post-GWAS characterization of significant MTAs. The results indicate promising avenues for increasing grain yield by exploiting variation in traits relating to the number of grains per unit area, as well as phenological traits influencing grain-filling duration of genotypes." @default.
- W2900615759 created "2018-11-29" @default.
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- W2900615759 date "2018-11-15" @default.
- W2900615759 modified "2023-09-29" @default.
- W2900615759 title "Genome-wide association studies for yield-related traits in soft red winter wheat grown in Virginia" @default.
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- W2900615759 doi "https://doi.org/10.1101/471656" @default.
- W2900615759 hasPublicationYear "2018" @default.
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