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Título

Genetic analysis for physical nut traits in almond

AutorFernández i Marti, Ángel; Font i Forcada, Carolina CSIC ORCID ; Socias i Company, Rafael
Palabras claveBreeding
Prunus amygdalus Batsch
Nut traits
Kernel traits
QTL analysis
Genomics
Fecha de publicaciónabr-2013
EditorSpringer Nature
CitaciónFernández A, Font C, Socias R. Genetic analysis for physical nut traits in almond. Tree Genetics & Genomes 9 (2): 455-465 (2013)
ResumenAlmond breeding is increasingly taking into account kernel quality as a breeding objective. Although information on nut and kernel physical parameters involved in almond quality has already been compiled, the genetic control of these traits has not been studied. This genetic information would improve the efficacy of almond breeding programs. A linkage map with 56 simple-sequence repeat markers was constructed for the “Vivot” × “Blanquerna” almond population showing a wide range of variability for the physical parameters of nut and kernel. A total of 14 putative quantitative trait loci (QTLs) controlling these physical traits were detected in the current study, corresponding to six genomic regions of the eight almond linkage groups (LG). Some QTLs are colocated in the same region or shared the same molecular markers, in a manner that reflects the correlations between the physical traits, as well as with the chemical components of the almond kernel. The limit of detection values for any given trait ranged from 2.06 to 5.17, explaining between 13.0 and 44.0 % of the phenotypic variance of the trait. This new genetic information needs to be taken into account when breeding for physical traits in almond. Increases in the positive quality traits, both physical and chemical, need to be considered simultaneously whenever they are genetically independent, even if they are negatively correlated. This is the first complete genetic framework map for physical components of almond nut and kernel, with 14 putative QTLs associated with a large number of parameters controlling physical traits in almond.
Descripción21 Pags., 5 Tabls., 3 Figs. The final editor version is available at: http://link.springer.com/journal/11295
Versión del editorhttp://dx.doi.org/10.1007/s11295-012-0566-8
URIhttp://hdl.handle.net/10261/78470
DOI10.1007/s11295-012-0566-8
ISSN1614-2942
E-ISSN1614-2950
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