Prospects of GWAS and predictive breeding for European winter wheat’s grain protein content, grain starch content, and grain hardness
| Autor: | Viktor Korzun, Gunther Stiewe, Quddoos H. Muqaddasi, Marion S. Röder, Martin W. Ganal, Jonathan Brassac, Sonja Kollers, Jörg Plieske, Odile Argillier, Erhard Ebmeyer |
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| Rok vydání: | 2020 |
| Předmět: |
Agricultural genetics
Genetic Markers 0106 biological sciences 0301 basic medicine Plant genetics Quantitative Trait Loci Population lcsh:Medicine Locus (genetics) Biology 01 natural sciences Article Plant breeding Linkage Disequilibrium 03 medical and health sciences Hardness Genetic variation Grain quality Grain Proteins Allele lcsh:Science education Alleles Triticum Principal Component Analysis education.field_of_study Multidisciplinary lcsh:R Genetic Variation food and beverages Molecular Sequence Annotation Starch Physical Chromosome Mapping Genetics Population Phenotype 030104 developmental biology Haplotypes Agronomy Genetic marker Epistasis lcsh:Q Genome-Wide Association Study 010606 plant biology & botany |
| Zdroj: | Scientific Reports, Vol 10, Iss 1, Pp 1-17 (2020) Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-020-69381-5 |
| Popis: | Grain quality traits determine the classification of registered wheat (Triticum aestivum L.) varieties. Although environmental factors and crop management practices exert a considerable influence on wheat quality traits, a significant proportion of the variance is attributed to the genetic factors. To identify the underlying genetic factors of wheat quality parameters viz., grain protein content (GPC), grain starch content (GSC), and grain hardness (GH), we evaluated 372 diverse European wheat varieties in replicated field trials in up to eight environments. We observed that all of the investigated traits hold a wide and significant genetic variation, and a significant negative correlation exists between GPC and GSC plus grain yield. Our association analyses based on 26,694 high-quality single nucleotide polymorphic markers revealed a strong quantitative genetic nature of GPC and GSC with associations on groups 2, 3, and 6 chromosomes. The identification of known Puroindoline-b gene for GH provided a positive analytic proof for our studies. We report that a locus QGpc.ipk-6A controls both GPC and GSC with opposite allelic effects. Based on wheat's reference and pan-genome sequences, the physical characterization of two loci viz., QGpc.ipk-2B and QGpc.ipk-6A facilitated the identification of the candidate genes for GPC. Furthermore, by exploiting additive and epistatic interactions of loci, we evaluated the prospects of predictive breeding for the investigated traits that suggested its efficient use in the breeding programs. |
| Databáze: | OpenAIRE |
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