2011 Annual Report 1a.Objectives (from AD-416) Determine the value of advanced potato germplasm with particular attention to disease, pest, and stress resistance, yield, quality characteristics, and profitability parameters. Define cultural conditions which will optimize yield and quality of each clone. 1b.Approach (from AD-416) New germplasm arising out of Federal and State breeding programs will be propagated to produce relatively disease-free seed. Clones will be grown under several climatic conditions, in multiple locations, under a multitude of cultural practice variables, and under planned disease, pest, and stress exposures. Evaluations will include expressions of resistance, yield, quality (external and internal), processabililty, storability, phytonutrient content and overall assessment of profitability under existing pricing and contracts for raw product in the fresh and processed sectors. Attention will be placed on developing an array of potential cultivars with candidates for every market type on a national and international basis. Larger scale commercial trials of more promising clones will be organized with industry representatives. Replacing 5354-21000-013-00D (expired 7/23/2011). 3.Progress Report This report documents progress for Project Number 5354-21000-016-00D, which began the end of July, 2011 and continues research from the expiring Tri-State agreement, Project Number 5354-21000-013-00D, entitled "Testing of Advanced Potato Germplasm for Biotic and Abiotic Resistances, Yield and Profitability Components". Trials are in the development process throughout the Northwest. Searching for low acrylamide selections continues to be a high priority. Oregon State University has developed the capacity to measure acrylamide, expanding the resources available to address this issue. An emerging disease has appeared suddenly in Washington and Oregon. This is Zebra Chip, a discoloration of tuber flesh caused by the transmission of LIberibacter spp. to potato by the potato psyllid. Potato psyllids have been documented for many years to show up late in the growing season. This is the first time they are documented to carry Liberibacter. It could be that this is a one year phenomenon caused by unusual climatic conditions that have brought bacterilierous psyllids up from the Texas and Mexico where it is endemic. However if the pathogen establishes and expands it will be a major biotic production constraints and the search for resistance or tolerance will take on and urgent character.