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Clusterization of metabolite profiles of anthers at the mature pollen stage from male-fertile and male-sterile potato genotypes. (a) Principal Component Analysis (PCA) method of clusterization; (b) kernel PCA method of clusterization obtained with the hyperbolic tangent function; (c) dendrogram of hierarchical clustering obtained using the ratios of metabolite contents. L–cv. Lomonosovskij, S–cv. Sudarynja, E–cv. Evraziya. G–cv. Gusar, 1101/10, 1604/16, 2103/7, 211/9-breeding lines.
