Project Number: 8042-21000-273-00
Start Date: Jul 01, 2013
End Date: Jun 30, 2018
Genetic sources of resistance to late blight and common scab will be evaluated for resistance in diseased plots. Resistant selections will be intercrossed to improve disease resistance, and crossed with selections with processing potential to combine resistance with processing potential; resultant progeny will be evaluated for disease resistance, processing potential, and other important marketing traits. Late blight resistant selections will be screened to identify unique xyloglucanase specific endoglucanase inhibitor proteins involved in resistance. Genetic materials will be evaluated for nitrogen uptake efficiency via tissue culture, stem cuttings, potted plants in the greenhouse, and whole plants grown in the field to develop a rapid throughput screening method. Genotypic data (single nucleotide polymorphisms (SNPs)) and phenotypic data (yield, specific gravity, tuber shape, chip color, disease resistance) generated for several potato populations via the SolCap Project will be analyzed to identify molecular markers associated with processing traits and disease resistance. Diploid potatoes with high lutein and high zeaxanthin content will be crossed with tetraploids to improve carotenoid levels in tetraploid potato germplasm and combine different tuber skin colors with more intense yellow-fleshed tubers.