บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Scab resistant apple cultivars – quality and storage.

Rutkowski K.P., Kruczynska D.E., Plocharski W., Wawrzynczak A.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.96

2004

บทคัดย่อ

Scab resistant apple cultivars – quality and storage. In the years 2001-2003 seven scab resistant apples cultivars (‘Freedom’, ‘Ecolette’, ‘Free Redstar’, ‘Melfree’, ‘Redkroft’, Medea’ and ‘Sawa’) were investigated.Trees were planted in the spring 1995 in the experimental orchard at Dabrowice (central Poland).One-year old trees o­n M.26 rootstock were planted in a complete randomized design with 3 replications having 3 trees per plot.

Quality parameters of fruits (weight, percentage of blush, total soluble solids, titratable acidity and flesh firmness) were measured at harvest, after storage (+2 °C), and after-shelf life (7 days at + 18 °C).Additionally at harvest starch index and internal ethylene concentration were measured.After storage and shelf life the incidence of storagedisorders and diseases were assessed.Quality parameters (acidity and total soluble solids) at harvest and after storage of studiedcultivars depended o­n the growing season.

The tree size of cultivars in the experiment, expressed as trunk cross sectional area (TCSA), indicated that the growth of ‘Free Redstar’ was significantly stronger, and ‘Medea’ weaker compared with other cultivars.Apples of ‘ Freedom’ and ‘Melfree’ were susceptible to superficial scald.Soft scald and core browning were observed o­n ‘Melfree’ apples.‘Free Redstar’ and ‘Sawa’ seem to be the most promising scab resistant cultivars for climate and soil conditions like Polish.