Wednesday, November 7, 2007
258-3

Path Analysis for Grade Components in Peanut.

Barry Tillman, University of Florida, North Florida REC, 3925 Hwy 71, Marianna, FL 32446-7906

Farm gate value of peanut is partly determined by a grading process whereby the percentage of total sound mature kernels (TSMK) is measured. Peanut cultivars vary considerably in the traits that result from the grading process. In order to evaluate breeding lines for grade components peanut breeding programs measure the grading components in a manner similar to the commercial process. This process requires about 20 minutes per sample making it one of the most time-consuming steps in the breeding process. This and the volume of seed needed prohibts measuring grade components of single plant selections. The aim of this study was to determine if the percentage TSMK could be predicted from other grade components using regression and path analysis. The percentage of hulls is highly predictive of percentage TSMK.