Dissection of Potato Complex Traits by Linkage and Association Genetics as Basis for Developing Molecular Diagnostics in Breeding Programs

摘要: Most characters relevant for the development of commercial potato varieties are complex, meaning that they controlled by multiple genetic and environmental factors. Over past 20 years, complex traits have been dissected linkage mapping in quantitative trait loci (QTL) using DNA-based markers. QTL was performed genetically diverse diploid few tetraploid bi-parental progeny. The integration various maps revealed regions genome where genes controlling located. This combination with known to functionally contribute a given phenotype identified candidate traits. More recently, association entered stage resulted identification first markers diagnostic populations cultivars related descent. Association based on DNA polymorphisms functional positional might be causal natural variation resistance late blight or tuber quality such as processing bruising resistance.