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Clarifying sub-genomic positions of QTLs for flowering habit and fruit quality in U.S. strawberry (Fragaria×ananassa) breeding populations using pedigree-based QTL analysis

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Horticulture Research 2017年第1期4卷 85-93页

作者： Sujeet Verma Jason D Zurn Natalia Salinas Megan M Mathey beatrice denoyes James F Hancock Chad E Finn Nahla V Bassil Vance M Whitaker IFAS/Department of Horticulture University of FloridaGulf Coast Research and Education Center14625 CR 672Wimauma33598FLUSA USDA-ARS National Clonal Germplasm Repository 33447 Peoria RoadCorvallis97333ORUSA Department of Horticulture Oregon State University4017 Agriculture and Life Sciences BuildingCorvallis97331ORUSA Department of Horticulture UMR 1332 Biologie du Fruit et PathologieINRAUniv.BordeauxVillenave d’OrnonF-33140France Michigan State University East Lansing48824MIUSA USDA-ARS HCRU3420 NW Orchard AvenueCorvallis97330ORUSA

The cultivated strawberry(Fragaria×ananassa)is consumed worldwide for its flavor and nutritional *** analysis of commercially important traits in strawberry are important for the development of breeding methods and tools for this *** several quantitative trait loci(QTL)have been previously detected for fruit quality and flowering traits using low-density genetic maps,clarity on the sub-genomic locations of these QTLs was *** discoveries in allo-octoploid strawberry genomics led to the development of the IStraw90 single-nucleotide polymorphism(SNP)array,enabling high-density genetic maps and finer resolution QTL *** this study,breeder-specified traits were evaluated in the Eastern(Michigan)and Western(Oregon)United States for a common set of breeding populations during 2 *** QTLs were validated for soluble solids content(SSC),fruit weight(FWT),pH and titratable acidity(TA)using a pedigree-based QTL analysis *** fruit quality,a QTL for SSC on linkage group(LG)6A,a QTL for FWT on LG 2BII,a QTL for pH on LG 4CII and two QTLs for TA on LGs 2A and 5B were *** addition,a large-effect QTL for flowering was detected at the distal end of LG 4A,coinciding with the FaPFRU *** haplotype analysis in the FaPFRU region indicated that the homozygous recessive genotype was highly predictive of seasonal *** probes in the FaPFRU region may help facilitate marker-assisted selection for this trait.

关键词： breeding straw Fragaria

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