Peer-Reviewed Article December 31, 2008
Mapping Quantitative Trait Loci Using Distorted Markers
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Published in: International Journal of Plant Genomics
Publisher: Hindawi Publishing Corporation • Egypt • 1687-5370
Abstract
Quantitative trait locus (QTL) mapping is usually performed using markers that follow a Mendelian segregation ratio. We developed a new method of QTL mapping that can use markers with segregation distortion (non-Mendelian markers). An EM (expectation-maximization) algorithm is used to estimate QTL and SDL (segregation distortion loci) parameters. The joint analysis of QTL and SDL is particularly useful for selective genotyping. Application of the joint analysis is demonstrated using a real life data from a wheat QTL mapping experiment.