Comparative QTL analysis in peach ‘Earlygold’ F2 and backcross progenies
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Fecha de publicación
2021-11-17ISSN
0304-4238
Resumen
Based on detailed maps, DNA sequences and phenotypic data, there is a great deal of information on the genetics and genomics of ‘Earlygold’, a historical peach cultivar from the US. The F2 between ‘Texas’ almond and ‘Earlygold’ peach (T × E) was used to construct the first saturated peach linkage map that later became the reference map for the Prunus genus. This population and the first backcross (’Texas’ × ‘Earlygold’) × ‘Earlygold’ (T1E) yielded information on QTLs for a large number of agronomic traits, and T1E is being used as the basis for constructing a set of introgression lines of ‘Texas’ fragments into the ‘Earlygold’ background, currently in progress. This paper describes the construction of a high-density SNP map for ‘Earlygold’ using an F2 population, and the QTL analysis of 24 traits. Results of maps and QTLs are compared with those from the ‘Earlygold’ parent of the T1E map, using the same set of markers and characters. Results show major differences between the two progenies in terms of numbers of markers mapped and the capability of detecting QTLs, with a large increase in the resolution of maps and QTLs when using the F2 progeny compared to the T1E pseudo-testcross. In addition,
we provide data on leaf senescence color, studied for the first time in peach, with two consistent QTLs located in the same position as other color-related genes and QTLs.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
Inglés
Materias (CDU)
633 - Cultivos y producciones
Páginas
8
Publicado por
Elsevier
Publicado en
Scientia Horticulturae
Citación
Kalluri, Naveen, Iban Eduardo, and Pere Arús. 2022. "Comparative QTL Analysis In Peach ‘Earlygold’ F2 And Backcross Progenies". Scientia Horticulturae 293: 110726. doi:10.1016/j.scienta.2021.110726.
Número del acuerdo de la subvención
MICIU/Programa Estatal de generación del conocimiento y fortalecimiento científico y tecnológico del sistema I+D+I/PID2019-110599RR-I00/ES/Aplication of Marker Assisted Introgression and Resynthesis in peach/MAIRES
MICIU/Programa Estatal de I+D+I orientada a los retos de la sociedad/PID2019-110599RR-I00/ES/Aplication of Marker Assisted Introgression and Resynthesis in peach/MAIRES/
MICIU/Programa Estatal de I+D+I orientada a los retos de la sociedad/PCI2019-103670/ES/Resiliencia de los cultivos de frutas al cambio climático en la cuenca mediterránea/FREECLIMB
MINECO/Programa Estatal de fomento de la investigación científica y técnica de excelencia/SEV-2015-0533/ES/ /
Program
Genòmica i Biotecnologia
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