Suitability of infiltration with magnesium chloride in prognosing storage ability of apples
2001
Piestrzeniewicz, C. | Tomala, K. (Warsaw Agricultural University (Poland). Dept. of Basic Natural Sciences in Horticulture)
Fruits of two apple cultivars Jonagold and Sampion were analysed for mineral elements in the years 1994-97. Additional apple samples were infiltrated with magnesium chloride solution and following 7 days of storage at 20 deg C, bitter pit-like symptoms were recorded. For evaluation of storage quality, representative fruits were kept at 0-1 deg C for 6 months. The number of bitter pit-like symptoms provoked by infiltration was positively correlated with K, Mg and Mn concentration as well as K:Ca and Mg:Ca ratio in fruits. However, it was negatively correlated with Ca fruit concentration. Among physiological disorders bitter pit prevailed. The results indicate that the number of bitter pit-like symptoms may be valuable in the assessment of nutritional state and storage capacity of fruits of these cultivars
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