An intra-specific consensus genetic map of pigeonpea [Cajanus cajan (L.) Millspaugh] derived from six mapping populations

Publication Overview
TitleAn intra-specific consensus genetic map of pigeonpea [Cajanus cajan (L.) Millspaugh] derived from six mapping populations
AuthorsBohra A, Saxena RK, Gnanesh BN, Saxena K, Byregowda M, Rathore A, KaviKishor PB, Cook DR, Varshney RK
TypeJournal Article
Journal NameTheoretical and Applied Genetics
Volume125
Year2012
Page(s)1325-1338
CitationBohra A, Saxena RK, Gnanesh BN, Saxena K, Byregowda M, Rathore A, KaviKishor PB, Cook DR, Varshney RK. An intra-specific consensus genetic map of pigeonpea [Cajanus cajan (L.) Millspaugh] derived from six mapping populations. Theor Appl Genet. 2012; 125:1325-1338.

Abstract

Pigeonpea (Cajanus cajan L.) is an important food legume crop of rainfed agriculture. Owing to exposure of the crop to a number of biotic and abiotic stresses, the crop productivity has remained stagnant for almost last five decades at ca. 750 kg/ha. The availability of a cytoplasmic male sterility (CMS) system has facilitated the development and release of hybrids which are expected to enhance the productivity of pigeonpea. Recent advances in genomics and molecular breeding such as marker-assisted selection (MAS) offer the possibility to accelerate hybrid breeding. Molecular markers and genetic maps are prerequisites for deploying MAS in breeding. However, in the case of pigeonpea, only one inter- and two intra-specific genetic maps are available so far. Here, four new intraspecific genetic maps comprising 59–140 simple sequence repeat (SSR) loci with map lengths ranging from 586.9 to 881.6 cM have been constructed. Using these four genetic maps together with two recently published intra-specific genetic maps, a consensus map was constructed, comprising of 339 SSR loci spanning a distance of 1,059 cM. Furthermore, quantitative trait loci (QTL) analysis for fertility restoration (Rf) conducted in three mapping populations identified four major QTLs explaining phenotypic variances up to 24 %. To the best of our knowledge, this is the first report on construction of a consensus genetic map in pigeonpea and on the identification of QTLs for fertility restoration. The developed consensus genetic map should serve as a reference for developing new genetic maps as well as correlating with the physical map in pigeonpea to be developed in near future. The availability of more informative markers in the bins harbouring QTLs for sterility mosaic disease (SMD) and Rf will facilitate the selection of the most suitable markers for genetic analysis and molecular breeding applications in pigeonpea.
Stocks
This publication contains information about 11 stocks:
Stock NameUniquenameType
ICPA_2039ICPA_2039breeding_research_material
ICPA_2043ICPA_2043breeding_research_material
ICPB_2049ICPB_2049breeding_research_material
ICPL_99050ICPL_99050breeding_research_material
ICPR_2447ICPR_2447breeding_research_material
ICPR_2671ICPR_2671breeding_research_material
ICPR_3467ICPR_3467breeding_research_material
ICPB_2049/ICPL_99050-F2ICPB_2049/ICPL_99050-F2population
ICPA_2039/ICPR_2447-F2ICPA_2039/ICPR_2447-F2population
ICPA_2043/ICPR_3467-F2ICPA_2043/ICPR_3467-F2population
ICPA_2043/ICPR_2671-F2ICPA_2043/ICPR_2671-F2population
Features
This publication contains information about 4 features:
Feature NameUniquenameType
ICPeM0075ICPeM0075genetic_marker
Ccttc006Ccttc006genetic_marker
CCB4CCB4genetic_marker
Ccac035Ccac035genetic_marker
Featuremaps
This publication contains information about 1 maps:
Map Name
Pigeon_pea-ICRISAT_consensus_map-2012