Molecular Mapping of QTLs for Heat Tolerance in Chickpea

Publication Overview
TitleMolecular Mapping of QTLs for Heat Tolerance in Chickpea
AuthorsPaul PJ, Samineni S, Thudi M, Sajja SB, Rathore A, Das RR, Khan AW, Chaturvedi SK, Lavanya GR, Varshney RK, Gaur PM
TypeJournal Article
Journal NameInternational journal of molecular sciences
Volume19
Issue8
Year2018
CitationPaul PJ, Samineni S, Thudi M, Sajja SB, Rathore A, Das RR, Khan AW, Chaturvedi SK, Lavanya GR, Varshney RK, Gaur PM. Molecular Mapping of QTLs for Heat Tolerance in Chickpea. International journal of molecular sciences. 2018 Jul 25; 19(8).

Abstract

Chickpea (Cicer arietinum L.), a cool-season legume, is increasingly affected by heat-stress at reproductive stage due to changes in global climatic conditions and cropping systems. Identifying quantitative trait loci (QTLs) for heat tolerance may facilitate breeding for heat tolerant varieties. The present study was aimed at identifying QTLs associated with heat tolerance in chickpea using 292 F8-9 recombinant inbred lines (RILs) developed from the cross ICC 4567 (heat sensitive) × ICC 15614 (heat tolerant). Phenotyping of RILs was undertaken for two heat-stress (late sown) and one non-stress (normal sown) environments. A genetic map spanning 529.11 cM and comprising 271 genotyping by sequencing (GBS) based single nucleotide polymorphism (SNP) markers was constructed. Composite interval mapping (CIM) analysis revealed two consistent genomic regions harbouring four QTLs each on CaLG05 and CaLG06. Four major QTLs for number of filled pods per plot (FPod), total number of seeds per plot (TS), grain yield per plot (GY) and % pod setting (%PodSet), located in the CaLG05 genomic region, were found to have cumulative phenotypic variation of above 50%. Nineteen pairs of epistatic QTLs showed significant epistatic effect, and non-significant QTL × environment interaction effect, except for harvest index (HI) and biomass (BM). A total of 25 putative candidate genes for heat-stress were identified in the two major genomic regions. This is the first report on QTLs for heat-stress response in chickpea. The markers linked to the above mentioned four major QTLs can facilitate marker-assisted breeding for heat tolerance in chickpea.
Stocks
This publication contains information about 3 stocks:
Stock NameUniquenameType
ICC4567_x_ICC15614-RILICC4567_x_ICC15614-RILpopulation
ICC4567ICC4567wild_unimproved
ICC15614ICC15614wild_unimproved
Projects
This publication contains information about 1 projects:
Project NameDescription
Chickpea-Heat_Tolerance-Paul-2018
Featuremaps
This publication contains information about 1 maps:
Map Name
chickpea-ICC4567xICC15614-RIL
Properties
Additional details for this publication include:
Property NameValue
Elocation10.3390/ijms19082166
ISSN1422-0067
Journal AbbreviationInt J Mol Sci
Journal CountrySwitzerland
LanguageEnglish
Language Abbreng
PIIE2166
Publication Date2018 Jul 25
Publication ModelElectronic
Publication TypeJournal Article
DOI10.3390/ijms19082166
eISSN1422-0067
URLhttps://www.ncbi.nlm.nih.gov/pubmed/?term=Molecular+Mapping+of+QTLs+for+Heat+Tolerance+in+Chickpea
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DatabaseAccession
PMID: PubMedPMID:30044369