Evaluation location: Texas, United States
Tubers were produced in three reps: 1) tuberlings grown in Kula, Maui, HI field; 2) seedlings grown in Kula, Maui, HI field; and 3) seedlings grown in greenhouse in Strugeon Bay, WI. Total phenolic content was determined following the method of Singleton et al. (1999). Chlorogenic acid was used as a standard, and PHEN expressed as micrograms of chlorogenic acid equivalents per gram of tuber fresh weight. An average was calculated from the three tuber reps.