Quantitative trait loci and underlying candidate genes controlling agronomical and fruit quality traits in octoploid strawberry (Fragaria x ananassa)

Publication Overview
TitleQuantitative trait loci and underlying candidate genes controlling agronomical and fruit quality traits in octoploid strawberry (Fragaria x ananassa)
AuthorsZorrilla-Fontanesi Y, Cabeza A, Domínguez P, Medina JJ, Valpuesta V, Denoyes-Rothan B, Sánchez-Sevilla JF, Amaya I
TypeJournal Article
Journal NameTheoretical and Applied Genetics
Volume123
Issue5
Year2011
Page(s)755-778
CitationZorrilla-Fontanesi Y, Cabeza A, Domínguez P, Medina JJ, Valpuesta V, Denoyes-Rothan B, Sánchez-Sevilla JF, Amaya I. Quantitative trait loci and underlying candidate genes controlling agronomical and fruit quality traits in octoploid strawberry (Fragaria x ananassa). Theoretical and Applied Genetics. 2011 Sep; 123(5):755-778.

Abstract

Breeding for fruit quality traits in strawberry (Fragaria × ananassa, 2n = 8x = 56) is complex due to the polygenic nature of these traits and the octoploid constitution of this species. In order to improve the efficiency of genotype selection, the identification of quantitative trait loci (QTL) and associated molecular markers will constitute a valuable tool for breeding programs. However, the implementation of these markers in breeding programs depends upon the complexity and stability of QTLs across different environments. In this work, the genetic control of 17 agronomical and fruit quality traits was investigated in strawberry using a F(1) population derived from an intraspecific cross between two contrasting selection lines, '232' and '1392'. QTL analyses were performed over three successive years based on the separate parental linkage maps and a pseudo-testcross strategy. The integrated strawberry genetic map consists of 338 molecular markers covering 37 linkage groups, thus exceeding the 28 chromosomes. 33 QTLs were identified for 14 of the 17 studied traits and approximately 37% of them were stable over time. For each trait, 1-5 QTLs were identified with individual effects ranging between 9.2 and 30.5% of the phenotypic variation, indicating that all analysed traits are complex and quantitatively inherited. Many QTLs controlling correlated traits were co-located in homoeology group V, indicating linkage or pleiotropic effects of loci. Candidate genes for several QTLs controlling yield, anthocyanins, firmness and L-ascorbic acid are proposed based on both their co-localization and predicted function. We also report conserved QTLs among strawberry and other Rosaceae based on their syntenic location.

Features
This publication contains information about 53 features:
Feature NameUniquenameType
plant heightqPLHT.232x1392-ch4F6.2008QTL
plant heightqPLHT.232x1392-ch4F6.2009QTL
fruit numberqFN.232x1392-ch5M4.2007QTL
fruit numberqFN.232x1392-ch3F2.2008QTL
fruit numberqFN.232x1392-ch2M4.2009QTL
fruit numberqFN.232x1392-ch3F1.2009QTL
fruit numberqFN.232x1392-ch5F4.2009QTL
fruit numberqFN.232x1392-ch5M4.2009QTL
fruit weightqFRW.232x1392-ch1M2.2007QTL
fruit weightqFRW.232x1392-ch1M2.2008QTL
fruit weightqFRW.232x1392-ch5M3.2008QTL
fruit firmnessqFRFRM.232x1392-ch7F1.2009QTL
plant widthqPLWD.232x1392-ch5M1.2008QTL
fruit firmnessqFRFRM.232x1392-ch2F6.2009QTL
total water soluble contentqSSC.232x1392-ch5M4.2007QTL
total water soluble contentqSSC.232x1392-ch6M3.2007QTL
total water soluble contentqSSC.232x1392-ch2F1.2009QTL
total water soluble contentqSSC.232x1392-ch6M3.2009QTL
titratable acidityqTITA.232x1392-ch5M2.2007QTL
titratable acidityqTITA.232x1392-ch4F2.2008QTL
titratable acidityqTITA.232x1392-ch5M2.2009QTL
titratable acidityqTITA.232x1392-ch5M2.2008QTL
PHqPH.232x1392-ch5M2.2007QTL
plant widthqPLWD.232x1392-ch5M1.2009QTL
PHqPH.232x1392-ch4F2.2008QTL

Pages

Projects
This publication contains information about 1 projects:
Project NameDescription
Agronomical and fruit quality traits-Amaya-2011
Featuremaps
This publication contains information about 1 maps:
Map Name
Strawberry-232x1392-F1