A0575
Title: A genetic model for the analysis of quantitative traits in autotetraploid species
Authors: Chen-Hung Kao - Institute of Statistical Science (Taiwan) [presenting]
Abstract: Many important crops and plants are polyploid species (with three or more complete chromosome sets). For example, potatoes, coffee, and alfalfa are autotetraploid plants, and some economically important aquaculture animals, such as Atlantic salmon and trout fish, are also autotetraploid. Statistical methods of QTL mapping have been well-established in diploid species. However, statistical methods are generally lacking or inadequate for polyploidy species, particularly autotetraploids, largely due to a lack of analytical methods that account for the complexities of autotetrasomic inheritance. While also considering the complexity of the autotetraploid genomes, a genotypic model is constructed that links the genotypic values of individuals with their genotypes (the coded variables) and can be used in the QTL mapping study. When applied to the autotetraploid species, the model can offer the advantage of consistency in model interpretation and statistical estimation as compared to the models of currently being employed in the analysis of quantitative traits.
