DETERMINATION OF ANTHOCYANINS, FLAVONOIDS AND PHENOLIC-ACIDS IN POTATOES - II - WILD, TUBEROUS SOLANUM SPECIES

The distribution of anthocyanins, flavonoids and phenolic acids in the tubers (skin and flesh), flowers and leaves of eight wild Solanum spe cies has been compared to that found in coloured, cultivated, S tubero sum. Principal component analysis (PCA) of these results revealed a st rong association between the various coloured S tuberosum cultivars wi th distinct differences from the other wild Solanum species. Similarly , PCA-showed that there were close correlations between the tuber skin and flesh components. Diseased tubers of S sanctae-rosae showed large increases in levels of flavonoids and phenolic acids. (C) 1998 SCI.