[PDF] Top 20 R/qtl2: Software for Mapping Quantitative Trait Loci with High-Dimensional Data and Multiparent Populations

... Multiparent populations (MPPs) are genetically mixed populations derived from a small set of known founders that are typically, but not necessarily, inbred ...provide high-resolution ... See full document

... full data model with the standard permutation procedure fails to control the type I error at nominal levels when there is polygenic background variation and leads to false positive rates that are substantially ... See full document

... outbred populations, the marker linkage phases in parental individuals/lines need to be in- ...missing data, small family sizes and non-negligible ... See full document

... identifying loci of high QTL by genetic background ...large populations derived from multiple related inbred-line crosses as is more typically available for ...over, populations. We apply the ... See full document

... the trait values are normally distributed in the population is satis- ...the data so obtained may be nonnormal, thus violat- ing the assumptions underlying the VC ...of trait values) can result in a ... See full document

... epistatic quantitative trait loci (QTL) is difficult since one must search for multiple QTL simultaneously in two or more ...a high statistical threshold must be adopted to avoid false ...the ... See full document

... one-time data of an actual ...cattle populations, have the requisite family struc- map ...QTL mapping, and phenotypic information is the estimate of QTL effect obtained from the actual available on ... See full document

... phenotypes. high dimension of ...real data analyses for natural outcrossing mates for unobservables by analyzing their posterior dis- ...a quantitative trait that paradigm, we are able to ... See full document

... affect quantitative traits has been of great interest to geneticists for many decades, and many statistical methods have been developed to map quantitative trait loci ...QTL mapping ... See full document

... of quantitative trait loci (QTLs) controlling rice root morpho- logical parameters have been detected in several mapping populations by teams interested in improving drought resistance ... See full document

... fine mapping than the corresponding unphased ...a quantitative trait locus (QTL) is located in a chromosome ...both trait value and genotypes at the markers are ...sociation mapping of ... See full document

... QTL mapping analyses homozygous or heterozygous, both classes of homozygous (SS (Falconer and Mackay ...and populations, additive effects, breeding design ...each trait and population, were scaled by ... See full document

... For the IR29/Pokkali population, a physical map con- sisted of 173 SNP and 83 SSR markers covering all 12 rice chromosomes based on the physical locations. QTL analysis was performed by single marker regression ana- ... See full document

... We examined, in detail, various advantages and disadvantages of the joint analysis as compared to sepa- rate analyses for mapping QTL and also for testing a number of hyp[r] ... See full document

... Starting from the single Q T L model using all selected markers, which markers still may be dropped (those markers previously explained the effect of the putative QTL) and[r] ... See full document

... Parametric interval mapping allows efficient de- tection and localization of QTLs for normally distrib uted traits, while keeping the false positive rate low through the[r] ... See full document

... two groups were 233.84 and 160.06 mm (Table 2). The observed and estimated values of performing selection for the other two traits on the sample based on four and five QTL are also shown in Table 2. The mapping ... See full document

... of data: The proposed method was tested Step three: In the case of individuals with genotyped using simulated data sets based on a granddaughter parents, IBD probabilities were calculated on the basis ... See full document

... More than 20 chromosomal regions have been identified in this way, with many more regions showing evidence for lower levels of gene replacement. In many cases the functional gene substitutions have not been defined, but ... See full document

... netic loci (called quantitative trait loci, QTL) that con- tribute to variation in quantitative traits has become a standard approach in evolutionary ...between populations or ... See full document