Natural DNA variation at candidate loci is associated with potato chip color, tuber starch content, yield and starch yield.

ABSTRACT: Complex characters of plants such as starch and sugar content of seeds, fruits, tubers and roots are controlled by multiple genetic and environmental factors. Understanding their molecular basis will facilitate diagnosis and combination of superior alleles in crop improvement programs ("precision breeding"). Association genetics based on candidate genes is one approach toward this goal. Tetraploid potato varieties and breeding clones related by descent were evaluated for 2 years for chip quality before and after cold storage, tuber starch content, yield and starch yield. Chip quality is inversely correlated with tuber sugar content. A total of 36 loci on 11 potato chromosomes were evaluated for natural DNA variation in 243 individuals. These loci included microsatellites and genes coding f

SUBMITTER: Li L 

PROVIDER: S-EPMC2358939 | biostudies-literature | 2008 May

REPOSITORIES: biostudies-literature