Date of Award

Winter 2007

Project Type


Program or Major

Plant Biology

Degree Name

Master of Science

First Advisor

Thomas M Davis


Cultivated strawberry (Fragaria x ananassa ) fruit contain primarily pelargonidin and little cyanidin. The antioxidant potential of cyanidin is reportedly twice that of pelargonidin. A High Performance Liquid Chromatography method was developed to assay fruit anthocyanidin content in 87 Fragaria accessions, including wild diploids and octoploids, cultivars, and two segregating populations. A cyanidin to pelargonidin ratio (CPRatio) greater than one was found only in diploids Fragaria vesca ssp. americana (confirming a previous report), F. viridis, and F. iinumae, and in three wild octoploid accessions: all F. chiloensis. The highest cyanidin contents were found in diploid F. viridis and in F. chiloensis ssp. lucida. During fruit ripening, pelargonidin content increased, while cyanidin content held steady. The results hold promise for breeding of cultivars with higher cyanidin content and with potentially higher antioxidant potential.