ISHS Acta Horticulturae 439: III International Strawberry Symposium
FRUIT QUALITY OF STRAWBERRY CULTIVARS |
| Authors: | K. Haffner, S. Vestrheim |
| Keywords: | Fragaria x ananassa, cultivar evaluation, fruit analysis, size, colour, refractive index, acids, flavour |
| Abstract:
A trial with 15 strawberry cultivars was carried out at the Agricultural University of Norway during the years 1990–1992. The following cultivars were included: Blomidon, Cornwallis, Glooscap, Elsanta, Elvira, Fertödi, Hedley, Hiku, Karola, Kent, Providence, Rapella, Senga Sengana, Valeta and Viking. Severe frost injury occurred in the winter 1990/1991, which also affected many cultivars through the following years. ‘Elsanta’, ‘Providence’, ‘Karola’ and ‘Valeta’ suffered the most severe injury. Yield comparisons were therefore unreliable. Fruit quality tests were, however, undertaken for most of the cultivars. ‘Senga Sengana’ was used as control, because this is still the dominating cultivar in Norway. Strawberry quality properties, including fruit size, colour, soluble solids content, titratable acidity (TA), content of L-ascorbic acid, and sensory flavour, were determined. The best over all fruit quality was found in the Canadian cv. Cornwallis, with highest flavour scores, soluble solids content (SSC), and high SSC/TA ratio. Ascorbic acid content was also satisfactory, and juice colour darker than in ‘Senga Sengana’. Fruit size was, however, below average. The highest level of ascorbic acid (AA) was found in ‘Elvira’ and ‘Rapella’ fruits (68 mg AA / 100 g fresh weight), followed by ‘Glooscap’ (55 mg) and ‘Elsanta’ (53 mg). Based on the results of this trial, the cultivars Cornwallis, Hedley, Kent and Viking may be of interest for commercial growing in Norway. | |
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