Title: THE EFFECT OF SODIUM SELENITE AND SELENATE ON THE QUALITY OF LETTUCE
Abstract: is essential microelement for humans, animals and some species of microorganisms. In human and animal cells Se incorporates in antioxidative syste m, but it is toxic at high dietary intake. Selenium enters the food chain through the plants which take it up from soil. Se concentration in plants depends on the ch emical form of Se, its concentration and bioavailability i n soil and soil microorganisms. The aim of the stud y was detect the effect of sodium selenite and selenate on yield quality of two lettuce varieties.Two varieties of lettuce plants (Lactuca sativa ): iceberg lettuce 'Tarzan' and lettuce 'Riga' were grown in 1L pots with peat substratum. Plants during growth season were once treated with 50 mg m -2 , 100 mg m -2 or 200 mg m -2 of sodium selenite or selenate. Control - without treatment. Fresh and dr y weight of plants, pigment content in plant leaves , ascorbic acid content and antiradical activity were tested t hree times during vegetation period. Plants treated with selenium had higher leaves pigment content in comparison with untreated ones. No correlation between s elenium concentration and antiradical activity was observed . Ascorbic acid content depended on lettuce variety and selenium praparation. No effect of selenium was obs erved on plant weight. Accumulation of selenium depended on plant and its variety. Selenium concentration in vegetables correlated with Se dose given to plants . Variants were sodium selenate was used accumulated more Se in comparison with selenite ones.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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Cited By Count: 7
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