Project Number: 1275-21000-176-07
Project Type: Specific Cooperative Agreement

Start Date: Mar 21, 2003
End Date: Mar 21, 2006

Objective:
To characterize the reaction of potato clones to both powdery and common scab. To determine the importance of genotype x environment interactions on the expression of resistance to powdery and common scab and to identify potato clones which have stable resistance to one or both of these pathogens.

Approach:
Breeders across the U.S. will be contacted in January and invited to submit 60 pounds of advanced selections for evaluation. Four standard cultivars will be utilized as checks: Atlantic and Ranger Russet as susceptible checks, and Russet Burbank and Superior as resistant checks. This should give a set of standards that growers across the country would be familiaar with, whether they are primarily russet or round-white growers. Russet standards would be produced by USDA/ARS, Aberdeen and round-whites by USDA/ARS, Beltsville.