Improved Breeding and Variety Evaluation Methods to Reduce Acrylamide Content and Increase Quality in Processed Potato Products
Small Grains and Potato Germplasm Research
2012 Annual Report
1a.Objectives (from AD-416):
The goal of this proposal is to facilitate the rapid, efficient development and introduction of new potato varieties with lowered concentrations of acrylamide in their potato products following processing.
1b.Approach (from AD-416):
The ARS potato breeding program at Aberdeen, Idaho, will be a participating field site for the production and evaluation of breeding clones and varieties for: .
1)the National Fry Processing Trial,.
2)potato mapping populations to determine the genetic heritabilities of asparagine, tuber sugars, and acrylamide, and.
3)identifying and validating SNP markers for their usefulness in marker-assisted selection for tuber sugar content. Participation also will include providing seed of material for evaluation for lowered acrylamide formation based on reduced tuber sugars and asparagine concentrations.
Tuber samples from the 2011 SolCAP field trial at Aberdeen representing 198 SolCAP tetraploid mapping population individuals and their parents were sent to Michigan for asparagine analyses in January of 2012 in order to assess the range of asparagine concentrations in this segregating population. Seed of 43 SolCAP tetraploid mapping clones and their parents Rio Grande Russet and Premier Russet were produced with seed being used for planting of replicated trials in Kimberly, Idaho, by our project and Michigan (Dave Douches) in 2012. The forty-three clones represent a range in processing characteristics from poorer (like the Rio Grande Russet parent) to exceptional (like the Premier Russet parent) and with intermediates between the two parents being represented as well. This population will provide information regarding segregation for acrylamide and the contribution of sugar and asparagine precursors to acrylamide formation. Eighty-eight entries of the National Fry Processing Trial (NFPT) also were planted at Aberdeen, Idaho, in 2012—Aberdeen being one of five sites of the 2012 NFPT. The purpose of the NFPT being the identification of potato breeding clones with low acrylamide concentrations following processing that would also meet the agronomic and sensory characteristics required by the potato processing industry. The research conducted contributes to Objectives 1 and 2 of the in-house project.