INFLUENCE OF POWDERY MILDEW ON THE CONTENT OF SUGARS IN THE SUGAR BEET LEAVES

CRĂIŢA-MARIA ROŞU

Abstract: The infection of sugar beet plants with the parasite fungus Erysiphe betae (Vahna) Weltz. induces a decrease in the content of total sugars in the infected leaves as a result of the reduction in the concentration of monosaccharides, disaccharides and insoluble polysaccharides, especially in the advanced stages of the disease. A different evolution was noticed, however, in what concerns the soluble polysaccharides, which accumulated following infection with the phytopathogenic fungus, but only in the early stages of the pathological process.
Keywords: Beta vulgaris L., powdery mildew, sugars.

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