QTL IciMapping Version 4.0 released

QTL IciMapping is freely-available public software, capable of building high-density linkage genetic maps and mapping quantitative trait loci (QTL). The software is project based and has user-friendly interfaces. Version 4.0 of the software was released in May 2014. Eight fully implemented functionalities in QTL IciMapping v4.0 are: (1) BIN: Binning of redundant markers; (2) MAP: Construction of genetic linkage maps in biparental populations; (3) CMP: Consensus map construction from multiple genetic linkage maps sharing common markers; (4) SDL: Mapping of segregation distortion loci in biparental populations; (5) BIP: Mapping of additive and digenic epistasis genes in biparental populations; (6) MET: QTL by environment interaction in biparental populations; (7) CSL: Mapping of additive and digenic epistasis genes with chromosome segment substitution lines; and (8) NAM: QTL mapping in nested association mapping populations. Three supplementary tools in QTL IciMapping v4.0 are: (1) MapShow: Display of completed genetic linkage maps; (2) 2pointREC: Estimation of recombination frequency between two loci in 20 biparental populations; and (3) ANOVA: Analysis of variance of multi-environmental trials.