CLONAL APPLE ROOTSTOCKS BRED BY THE MICHURINSK STATE AGRARIAN UNIVERSITY AS A SOURCE OF ANTHOCYANIN PIGMENTS
Analysis of the quantitative content of pigments in the leaves and stems of clonal apple rootstocks bred by the Michurinsk State Agrarian University showed a high content of anthocyanins (more than 80 mg/100g). When analyzing the qualitative composition, it was noted that anthocyanins in the rootstocks are represented by three main groups, while they are dominated by purple and purple-blue color caused by these compounds. The share of non-standard layers in the studied clonal apple rootstocks varied in the range from 41.9% (62-396) to 73.7% (98-7-77), which makes it possible to use them as an available alternative source for obtaining valuable anthocyanin food pigments