High-density genetic linkage map construction and identification of fruit-related QTLs in pear using SNP and SSR markers

Publication Overview
TitleHigh-density genetic linkage map construction and identification of fruit-related QTLs in pear using SNP and SSR markers
AuthorsWu J, Li LT, Li M, Khan MA, Li XG, Chen H, Yin H, Zhang SL
TypeJournal Article
Journal NameJournal of experimental botany
Year2014
CitationWu J, Li LT, Li M, Khan MA, Li XG, Chen H, Yin H, Zhang SL. High-density genetic linkage map construction and identification of fruit-related QTLs in pear using SNP and SSR markers. Journal of experimental botany. 2014 Aug 16.

Abstract

Pear (Pyrus spp) is an important fruit crop, grown in all temperate regions of the world, with global production ranked after grape and apples among deciduous tree crops. A high-density linkage map is a valuable tool for fine mapping quantitative trait loci (QTL) and map-based gene cloning. In this study, we firstly constructed a high-density linkage map of pear using SNPs integrated with SSRs, developed by the rapid and robust technology of restriction-associated DNA sequencing (RADseq). The linkage map consists of 3143 SNP markers and 98 SSRs, 3241 markers in total, spanning 2243.4 cM, with an average marker distance of 0.70 cM. Anchoring SSRs were able to anchor seventeen linkage groups to their corresponding chromosomes. Based on this high-density integrated pear linkage map and two years of fruit phenotyping, a total of 32 potential QTLs for 11 traits, including length of pedicel (LFP), single fruit weight (SFW), soluble solid content (SSC), transverse diameter (TD), vertical diameter (VD), calyx status (CS), flesh colour (FC), juice content (JC), number of seeds (NS), skin colour (SC), and skin smooth (SS), were identified and positioned on the genetic map. Among them, some important fruit-related traits have for the first time been identified, such as calyx status, length of pedicel, and flesh colour, and reliable localization of QTLs were verified repeatable. This high-density linkage map of pear is a worthy reference for mapping important fruit traits, QTL identification, and comparison and combination of different genetic maps.

Projects
This publication contains information about 1 projects:
Project NameDescription
Pear-fruit_phenotype-Wu-2014
Features
This publication contains information about 3,175 features:
Feature NameUniquenameType
Pyb04_034Pyb04_034genetic_marker
Pyb04_037Pyb04_037genetic_marker
Pyb04_038Pyb04_038genetic_marker
Pyb04_039Pyb04_039genetic_marker
Pyb04_041Pyb04_041genetic_marker
Pyb04_042Pyb04_042genetic_marker
Pyb04_043Pyb04_043genetic_marker
Pyb04_044Pyb04_044genetic_marker
Pyb04_045Pyb04_045genetic_marker
Pyb04_046Pyb04_046genetic_marker
Pyb04_047Pyb04_047genetic_marker
Pyb04_048Pyb04_048genetic_marker
Pyb04_049Pyb04_049genetic_marker
Pyb04_051Pyb04_051genetic_marker
Pyb04_052Pyb04_052genetic_marker
Pyb04_053Pyb04_053genetic_marker
Pyb04_054Pyb04_054genetic_marker
Pyb04_055Pyb04_055genetic_marker
Pyb04_056Pyb04_056genetic_marker
Pyb04_057Pyb04_057genetic_marker
Pyb04_061Pyb04_061genetic_marker
Pyb04_062Pyb04_062genetic_marker
Pyb04_063Pyb04_063genetic_marker
Pyb04_064Pyb04_064genetic_marker
Pyb04_066Pyb04_066genetic_marker

Pages

Featuremaps
This publication contains information about 1 maps:
Map Name
Pear-BD-F1-2014-genetic
Stocks
This publication contains information about 3 stocks:
Stock NameUniquenameType
DangshansuliDangshansulicultivar
Bayuehong_x_DangshansuliBayuehong_x_Dangshansulipopulation
BayuehongBayuehongcultivar
Cross References
This publication is also available in the following databases:
DatabaseAccession
PMID: PubMedPMID:25129128
AGL: USDA National Agricultural LibraryAGL:4893819