Christopher Heffelfinger1, Christopher A Fragoso1, Mathias Lorieux2,3. 1. Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT, USA. 2. DIADE Research Unit, Institut de Recherche pour le Développement (IRD), Montpellier, France. 3. Rice Genetics and Genomics Laboratory, International Center for Tropical Agriculture (CIAT), Cali, Colombia.
Abstract
MOTIVATION: Genotyping by sequencing (GBS) generates datasets that are challenging to handle by current genetic mapping software with graphical interface. Geneticists need new user-friendly computer programs that can analyze GBS data on desktop computers. This requires improvements in computation efficiency, both in terms of speed and use of random-access memory (RAM). RESULTS: MapDisto v.2.0 is a user-friendly computer program for construction of genetic linkage maps. It includes several new major features: (i) handling of very large genotyping datasets like the ones generated by GBS; (ii) direct importation and conversion of Variant Call Format (VCF) files; (iii) detection of linkage, i.e. construction of linkage groups in case of segregation distortion; (iv) data imputation on VCF files using a new approach, called LB-Impute. Features i to iv operate through inclusion of new Java modules that are used transparently by MapDisto; (v) QTL detection via a new R/qtl graphical interface. AVAILABILITY AND IMPLEMENTATION: The program is available free of charge at mapdisto.free.fr. CONTACT: mapdisto@gmail.com. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.
MOTIVATION: Genotyping by sequencing (GBS) generates datasets that are challenging to handle by current genetic mapping software with graphical interface. Geneticists need new user-friendly computer programs that can analyze GBS data on desktop computers. This requires improvements in computation efficiency, both in terms of speed and use of random-access memory (RAM). RESULTS: MapDisto v.2.0 is a user-friendly computer program for construction of genetic linkage maps. It includes several new major features: (i) handling of very large genotyping datasets like the ones generated by GBS; (ii) direct importation and conversion of Variant Call Format (VCF) files; (iii) detection of linkage, i.e. construction of linkage groups in case of segregation distortion; (iv) data imputation on VCF files using a new approach, called LB-Impute. Features i to iv operate through inclusion of new Java modules that are used transparently by MapDisto; (v) QTL detection via a new R/qtl graphical interface. AVAILABILITY AND IMPLEMENTATION: The program is available free of charge at mapdisto.free.fr. CONTACT: mapdisto@gmail.com. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.
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