Submitted to: Peanut Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 9/4/2001
Publication Date: 7/15/2002
Citation: PATTEE, H.E., ISLEIB, T.G., GORBET, D.W., GIESBRECHT, F.G., CUI, Z. PARENT SELECTION IN BREEDING FOR ROASTED PEANUT FLAVOR QUALITY. PEANUT SCIENCE. 2002. V. 28. P. 51-58.
Interpretive Summary: Roasted peanut flavor is a primary factor in peanut quality and is often overlooked in development of new peanut breeding lines and cultivars. Recently, flavor variation in peanuts has been examined but there are no estimates of how individual parents of a specific line contributed to the flavor of that line. Best linear unbiased prediction (BLUP) is a new method for predicting the breeding value of a parent based on the performance of its relatives. Applying this method to a very large set of flavor data from 250 peanut lines we found that the use of certain lines as parents resulted in decreased flavor quality. We identified specific lines which when used as parents will result in improved rather than decreased flavor quality. This information is especially important when disease resistance or other production factors, which are often associated with decreased flavor, are of such extreme importance in current peanut breeding gprograms.
Technical Abstract: Sensory attributes that make up roasted peanut flavor quality are traits often overlooked in development of new cultivars. Recently, variation in peanut sensory attributes has been characterized, but there are no estimates of the effects of lines as parents in a breeding program. Best linear unbiased prediction (BLUP) is a new method for predicting the breeding value of a parent based on the performance of its relatives. The method was applied to a set of data collected on sensory attributes roasted peanut, sweet, and bitter for 250 peanut genotypes evaluated in 53 environments. BLUP solutions using different estimates of narrow-sense heritability (h2) were highly correlated (r>0.9), suggesting that precise estimates of h2 are not necessary. Correlations of predicted BLUP values with observed values were moderate (0.63