Location: Market Quality and Handling Research
2013 Annual Report
Flavor of peanut breeding lines being developed for commercial release as new varieties remains an important attribute for manufacturers of peanut products. For the third year, samples from the UPPT were subjected to sensory evaluation by a trained panel as well as to analysis for tocopherols, sugars and fatty acids. Nine locations provided 13 peanut breeding lines. Differences were found in flavor among the lines, but all lines had acceptable flavor quality. This data was made available to breeders for evaluation and identification of lines with desired chemical and nutritional attributes. This data indicates to breeders working on these lines that continuation of development is warranted. This also indicates to shellers and manufacturers that forthcoming lines will have acceptable flavor and nutritional qualities. Sensory quality testing of samples from the multi-state Uniform Peanut Performance Tests (UPPT) was done at the Market Quality Unit. These results were subjected to statistical evaluation. Restricted maximum likelihood estimation of variance components reflecting a range of interactions was performed. These components were effects of year, production region, year-by-year region interaction, location with regions, year-by-location interaction in region, genotype, year-by-genotype interaction, region-by-genotype interaction, year-by-region-by-genotype interaction, location-by-genotype interaction in region, year-by-location-by-genotype interaction in region, kernel grade within genotype, year-by-grade interaction in genotype, region-by-grade interaction in genotype, year-by-region-by-grade interaction in genotype, location-by-grade interaction in region and genotype. From the results, breeders should be able to reliably identify lines with superior sweet attribute intensity, but identification of lines with intense roasted peanut attribute will be more difficult.