Abstract
The changes of vitamin C content in relation to Cd, Pb and Zn accumulation in 6 potatoes varieties: very early (Junior, Impala), early (Livera), middle early (Agria), medium-late (Asterix, Desirée) were surveyed in this work. The soil used in pot trial had pseudototal (in soil extract of <I>aqua regia</i) contents of Cd 0.54–0.9, Pb 14.0–107.2, Zn 47.9–55.8 mg/kg. Experiment was conducted in 4 variants: A – control, B–D with the gradual treatment of Cd, Pb, and Zn in form on their salts solutions. The metals content in potatoes was assessed by AAS, vitamin C by HPLC method. The accumulation Cd, Pb, Zn varied in dependence on variety, the highest one was in varieties Junior, Impala; the lowest one in Asterix, Desirée. The vitamin C content (mg/kg f.m.) was highest after Cd treatment in all varieties in variant D: 491.46 (Junior) – 566.27 (Asterix); after Pb in variant B: Impala (101.51) – Desirée (157.31), after Zn in variant C: Impala (78.80) – Desirée (143.41).
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