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dc.contributor.authorMas Gómez, Jorgees_ES
dc.contributor.authorCantín Mardones, Celia Maríaes_ES
dc.contributor.authorMoreno Sánchez, María Angeleses_ES
dc.contributor.authorMartínez García, Pedro J.es_ES
dc.coverage.spatialCiencia vegetales_ES
dc.identifier.citationFrontiers in Plant Science, vol. 13, (2022)-
dc.description.abstractPeach [Prunus persica (L.) Batsch] is one of the most important stone fruits species in world production. Spanish peach production is currently the second largest in the world and the available cultivars in Spain includes a great source of genetic diversity with variability in fruit quality traits and postharvest disorders tolerance. In order to explore the genetic diversity and single nucleotide polymorphism (SNP)-trait associations in the Spanish germplasm, the new peach 18K SNP v2 array was used to genotype 287 accessions belonging to the two National Peach Germplasm Collections placed at the Agrifood Research and Technology Centre of Aragon (CITA) and at the Experimental Station of Aula Dei (EEAD)-CSIC. The high density of the new SNP array allowed the identification of 30 groups of synonymies, which had not been identified before using low-density markers. In addition, a possible large-scale molecular event in ‘Starcrest’, a sport of ‘Springcrest’, was detected showing a possible chromosome replacement of a 13.5 Mb region. Previous suggestions about Spanish diversification regions agreed with our genetic diversity and linkage disequilibrium (LD) decay results using high-density markers. A genome-wide association study (GWAS) detected 34 significant SNP-trait association with the type of leaf glands (TLG), fruit hairiness (FH), and flesh texture (FT). The impact of the significant SNPs was studied with SnpEff. Candidate genes encode several important family proteins involved in trichome formation and powdery mildew resistance (linked to TLG in peach). The genetic distance among cultivars obtained, together with SNP-trait associations found, provide new knowledge for marker-assisted selection and crossing approaches in peach breeding programmes.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.titleGenetic Diversity and Genome-Wide Association Study of Morphological and Quality Traits in Peach Using Two Spanish Peach Germplasm Collectionsen
dc.typeJournal Contribution*
dc.subject.agrovocPrunus persicaes
dc.subject.agrovocDiversidad genética entre especieses
dc.subject.agrovocBanco de germoplasmaes
dc.bibliographicCitation.titleFrontiers in Plant Scienceen
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