Map NameTT_VG9514_x_TAG24_a
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Publication Map NameVG 9514_x_TAG 24
Map UnitscM
Map viewcmap-js
SpeciesArachis spp.
Mapping populationTT_VG9514_x_TAG24_a
Parent 1VG 9514
Parent 2TAG 24
Population Size164
Population TypeF8
MethodsMapMaker EXP (v. 3.0) and QTL IciMapping (v. 3.2).
DescriptionThis SSR and TE-based genetic map was developed using a population of 164 F8 recombinant inbred lines (RILs) that were produced by mating the Arachis hypogaea cultivars 'VG 9514' and 'TAG 24'. It is composed of 21 linkage groups with lengths that vary from 8.2 to 225.6 cM. The map is 1796.7 cM in cumulative length, and the average distance between markers is 9.4 cM. There are a total of 190 marker loci including 141 SSR, 39 transposable elements (TE), 3 inter-simple sequence repeats (ISSR), and 3 morphological markers.
PublicationMondal, Hadapad et al., 2014a: Identification of quantitative trait loci for bruchid (Caryedon serratus Olivier) resistance components in cultivated groundnut (Arachis hypogaea L.).
CommentThe Groundnut bruchid resistant cultivar 'VG 9514' was the ultimate result of a cross between the tetraploid Arachis hypogaea cultivar 'CO 1' (the seed parent, 2n=40) and the A-genome diploid species Arachis cardenasii (the pollen parent, 2n=20). This mating of a tetraploid and a diploid initially resulted in triploid progeny (2n = 30); colchinine treatment of these sterile plants led to the production of hexaploids (2n = 60). The hexaploid plants were then backcrossed three times in a row to the tetraploid CO 1. The lineage was advanced to the BC3F4 generation at which point VG 9514 was identified from among the stabilized tetraploid genotypes. An initial 25-linkage group framework map was created using MapMaker EXP (v. 3.0), and the linkage groups were given names based on the system described in Gautami, Fonceka et al., 2012a. Some of the linkage groups were then merged into one group using QTL IciMapping (v. 3.2) and SSR markers found on the consensus tetraploid Arachis maps published in Gautami, Fonceka et al., 2012a and Shirasawa, Bertioli et al., 2013a. The genetic map in Mondal, Hadapad et al. (2014a) is an enhanced version of an earlier one presented in Mondal, Badigannavar et al. (2012a) that was built with 105 SSR marker loci, 1 RAPD-SCAR marker, 2 morphological traits, and 1 dominant rust resistance locus. The map was improved by the inclusion of additional loci including 36 SSRs (genomic and EST), 39 transposable element (TE) markers, 3 inter-simple sequence repeat (ISSR) markers, and 2 resistance gene candidate (RGC) markers. Out of the 221 markers found to be polymorphic between VG 9514 and TAG 24, 185 non-distorted and 5 distorted markers were placed on the final linkage map.