Specific and non-specific quantitative and qualitative changes of concentration of photosynthetic pigments (chlorophylls a, b, and carotenoids), activity of anion peroxidases and content of phenolic compounds were detected in sugar beet regenerants, which were cultivated for a long time under in vitro conditions. This features play important role in regulatory and defense mechanisms and shown significant genotypic differences between regenerants. A cluster analysis for the similarity of genotypes was carried out by a quantitative biochemical state of the metabolic profile. These peculiarities are revealed in respect to the formation of ecological plasticity of plants, which have great importance for increasing the efficiency of the sugar beet breeding process.
Keywords: sugar beet, triterpene glycosides, flavonoids, peroxidases, metabolic profile
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