A Comparison of Physical and Chemical Attributes of Strawberry Cultivars and Advanced Breeding Selections from the University of Florida

摘要

Postharvest performance is an important consideration when developing a new strawberry cultivar. The objectives of this study were to evaluate the quality of advanced strawberry selections and compare them to commercial cultivars. 'Florida Radiance' and 'Sensation~R Floridal27', and six advanced selections from the University of Florida breeding program were evaluated over seven harvests. Each cultivar and advanced selection was evaluated for appearance, weight loss, texture, soluble solids content (SSC), acidity, total phenolics (TPC), and ascorbic acid (AA) on the day of harvest and after a 7-day storage period at 2 °C. On average, 'Florida Radiance', FL 10-166 and FL 12-5-103 scored higher for appearance at harvest; however, FL 12-5-103 had thebest appearance after storage and the least amount of weight loss. FL 12-26-49 was the firmest strawberry at harvest and remained the firmest after the 7-day storage period. FL 12-70-55 had the lowest SCC after storage despite having the highest initialSSC. The highest titratable acidity was measured in FL 12-55-220, FL 12-70-55, and FL 12-121-5 on the day of harvest. The highest TPC was measured in FL 10-166, which also had the highest TPC at the end of storage. Compared to the other strawberry genotypes, FL 12-55-220 maintained the highest levels of AA throughout storage. Results from this study showed that there is a significant interaction between genotype and specific quality attributes. The results also provide information valuable to the selection process by identifying new genotypes with improved compositional attributes combined with suitable quality characteristics after cold storage.