Enzyme and total protein variation in two potato (Solanum tuberosum L.) cultivar tubers due to selenium application in the soil

Abstract

Enzyme and total protein varied in potato (Solanum tuberosum L.) cultivar tubers due to selenium application in the soil. The effect of application soil sodium selenite (Na₂SeO₃ ) at 2.5, 5.0 or 7.5 kg.ha^-1 applied one day before planting was studied with the potato cultivars Baronesa and Monte Bonito during a growth season. The 2.5 kg.ha^-1 treatment significantly increased protein levels, whereas polyphenoloxidase and peroxidase activity was significantly decreased. There was no effect of treatment in the tuber dry matter.