Mapping quantitative trait loci associated with blush in peach [Prunus persica (L.) Batsch]

Publication Overview
TitleMapping quantitative trait loci associated with blush in peach [Prunus persica (L.) Batsch]
AuthorsFrett TJ, Reighard GL, Okie WR, Gasic K.
TypeJournal Article
Journal NameTree Genetics & Genomes
Volume10
Issue2
Year2014
Page(s)367-381
CitationFrett TJ, Reighard GL, Okie WR, Gasic K. Mapping quantitative trait loci associated with blush in peach [Prunus persica (L.) Batsch]. Tree Genetics & Genomes 2014 April, 10(2):367-381.

Abstract

Blush is an important trait for marketing peaches. The red skin pigmentation develops through the flavonoid and anthocyanin pathways, and both genetic and environmental stimuli, and their interaction, control the regulation of these pathways. The molecular basis of blush development in peach is yet to be understood. An F2 blush population (ZC2) derived from a cross between two peach cultivars with contrasting phenotypes for blush, “Zin Dai” (∼30 % red) and “Crimson Lady” (∼100 % red), was used for linkage map construction and quantitative trait loci (QTLs) mapping. The segregating population was phenotyped for blush for 4 years using a visual rating scale and quantified using a colorimeter (L*, a*, and b*) 1 year. The ZC2 population was genotyped with the IPSC 9 K peach single-nucleotide polymorphism (SNP) array v1, and a high-density ZC2 genetic linkage map was constructed. The map covers genetic a distance of ∼452.51 cM with an average marker spacing of 2.38 cM/marker. Four QTLs were detected: one major QTL on LG3 (Blush.Pp.ZC-3.1) and three minor QTLs on LG 4 and 7 (Blush.Pp.ZC-4.1; Blush.Pp.ZC-4.2; Blush.Pp.ZC-7.1), indicating the presence of major and minor genes involved in blush development. Candidate genes involved in skin and flesh coloration of peach (PprMYB10), cherry (PavMYB10), and apple (MdMYB1/MdMYBA/MdMYB10) are located within the interval of the major QTL on LG3, suggesting the same genetic control for color development in the Rosaceae family. Marker-assisted selection (MAS) for blush is discussed.
Projects
This publication contains information about 1 projects:
Project NameDescription
Blush_ZC_Gasic_2012
Features
This publication contains information about 4 features:
Feature NameUniquenameType
red skin pigmentationqRSP.ZC-ch3.1QTL
red skin pigmentationqRSP.ZC-ch4.1QTL
red skin pigmentationqRSP.ZC-ch4.2QTL
red skin pigmentationqRSP.ZC-ch7.1QTL
Featuremaps
This publication contains information about 1 maps:
Map Name
peach-ZC-F2
Cross References
This publication is also available in the following databases:
DatabaseAccession
AGL: USDA National Agricultural LibraryAGL:4801186