ISHS Acta Horticulturae 595: International Symposium on Apple Breeding for Scab Resistance
STORAGE OF SCAB RESISTANT APPLES: BIO-PATHOLOGICAL AND QUALITY ASPECTS |
| Authors: | F. Neri, S. Brigati, A. Folchi, S. Gualanduzzi, G.C. Pratella |
| Keywords: | superficial scald, conjugated triene, low oxygen controlled atmosphere, breakdown, shrivelling, rots, maturity indices, sensory evaluation |
| Abstract:
The apples “Florina”, “Primiera” and “Gold Rush” were picked at different stages of maturity and stored at 0°C (cv “Florina”) or at °1C (cv “Primiera” and “Gold Rush”) for 60, 120 and 180 days. The trials were carried out for one year with cv Gold Rush and two years for cv “Florina” and “Primiera”. On harvest, during cold storage and after 7 days of shelf-life at 20°C the maturity indices were measured. At the end of the shelf-life, the incidence of diseases and disorders were determined as well as sensory evaluations. “Florina” apples were also stored in low oxygen (1% O2 and 1% CO2) at 0°C. The relationship between conjugated triene and superficial scald was also evaluated. The best picking time for “Primiera” apples seems to be when starch degradation is 3.5-4 (scale 1-5). There was a higher incidence of superficial scald in the fruits harvested early. When the fruit is stored more then 60 days the susceptibility to superficial scald and internal breakdown increases and quality deteriorates noticeably. There was a low susceptibility to fungal diseases. The best picking time for “Florina” apples seems to be when starch degradation is 3.5-4. Storage periods longer then 120 days increased fruit susceptibility to rot and led to a deterioration in quality. The incidence of superficial scald was higher in early harvested fruits and after 60 days of storage. Early harvested fruits showed symptoms of shrivelling after 180 days of storage. Low O2 storage controlled superficial scald. The best picking time for “Gold Rush” apples seems to be when starch degradation is 2.5. Superficial scald appeared after 120 days storage. Early picked fruits were heavily damaged by superficial scald. The percentage of fungal diseases was very low. | |
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