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
Pyb02_379Pyb02_379genetic_marker
Pyb02_381Pyb02_381genetic_marker
Pyb02_382Pyb02_382genetic_marker
Pyb02_384Pyb02_384genetic_marker
Pyb02_387Pyb02_387genetic_marker
Pyb02_388Pyb02_388genetic_marker
Pyb02_390Pyb02_390genetic_marker
Pyb02_391Pyb02_391genetic_marker
Pyb02_392Pyb02_392genetic_marker
Pyb02_393Pyb02_393genetic_marker
Pyb02_395Pyb02_395genetic_marker
Pyb02_397Pyb02_397genetic_marker
Pyb02_402Pyb02_402genetic_marker
Pyb02_403Pyb02_403genetic_marker
Pyb02_404Pyb02_404genetic_marker
Pyb02_407Pyb02_407genetic_marker
Pyb02_413Pyb02_413genetic_marker
Pyb02_414Pyb02_414genetic_marker
Pyb02_417Pyb02_417genetic_marker
Pyb02_419Pyb02_419genetic_marker
Pyb02_420Pyb02_420genetic_marker
Pyb02_423Pyb02_423genetic_marker
Pyb02_426Pyb02_426genetic_marker
Pyb02_427Pyb02_427genetic_marker
Pyb02_428Pyb02_428genetic_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