Comparative QTL analysis in peach 'Earlygold' F2 and backcross progenies
Kalluri, Naveen (Centre de Recerca en Agrigenòmica)
Eduardo, Iban (Centre de Recerca en Agrigenòmica)
Arús i Gorina, Pere (Centre de Recerca en Agrigenòmica)

Date:	2022
Abstract:	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 F 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 F 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 F 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.
Grants:	Agencia Estatal de Investigación PID2019-110599RR-I00 Agencia Estatal de Investigación PCI2019-103670 Ministerio de Economía y Competitividad SEV-2015-0533
Note:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Prunus persica ; F2 ; Backcross ; QTL analysis ; Comparative mapping ; Leaf senescence color
Published in:	Scientia Horticulturae, Vol. 293 (February 2022) , art. 110726, ISSN 0304-4238

DOI: 10.1016/j.scienta.2021.110726

8 p, 3.4 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > CRAG (Centre for Research in Agricultural Genomics)
Articles > Research articles
Articles > Published articles