The effect of rootstock on the physiological status and the storage ability of 'Elise' apples
2006
Tomala, K., Warsaw Agricultural Univ. (Poland). Dept. of Pomology and Basic Natural Sciences in Horticulture | Slowinska, I., Warsaw Agricultural Univ. (Poland). Dept. of Pomology and Basic Natural Sciences in Horticulture
The effect of fifteen rootstocks (P 2, P 14, P 16, P 22, NR 47, P 59, P 60, B 9, B 146, B 396, pB-4, M.9 EMLA, M.26, M.27 and M.7) on the storability of 'Elise' apples was studied in the 1999-2002 seasons. Measurements during harvest included mean fruit weight, flesh firmness, starch index, soluble solids and internal ethylene concentration. After six month of cold storage, weight loss, firmness, soluble solids and incidence of storage disorders were determined. Trends showing higher firmness values for fruits from trees on red-leaved rootstocks (B 9, P 60, B 396, P 59) were noted. Fruits trees on p 2 resulted in higher than average internal ethylene content; although values obtained for M.27 were lower than average. B 9, P 59 and M.27 resulted in higher values of the streif index that corresponded with later ripening. The smallest fruits were noted for super dwarfing rootstocks PB-4, P 22, M.27 and P 59, while the biggest were ON P 14, M.7 and P 2. A low percentage of physiological disorders of fruits were noted for B 9, B 396, P 59 and NR 47. A high seasonal variation was observed for firmness, climacteric ethylene production, and maturity indices and fruit quality after storage.
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