Fig. 3From: Slow darkening of pinto bean seed coat is associated with significant metabolite and transcript differences related to proanthocyanidin biosynthesisFlavonoid analysis in seed coat of pinto bean lines. Seed coat tissue was collected from 150 mg stage of developing seeds from CDC Pintium and 1533–15, and flavonoids were determined by HPLC. Data shown are mean values from three independent experiments. Asterisks (*) indicate significant difference between the samples as determined by Student’s t-testBack to article page