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Changes in the level of some organic compounds during hypocotyl-root growth of radish Raphanus sativus L. cultivars

Ewa Capecka

Department of Vegetable Crops and Horticultural Economics
Agricultural University
29 Listopada 54, 31-425 Kraków, Poland

In a two-year field experiment changes were observed in the dry weight level of radish hypocotyl-roots and leaves as well as in soluble sugar and ascorbic acid of hypocotyl-roots during their growth. Six cultivars were tested: a) early radish (Rex and Ostergruss Różowa); b) Japanese radish (Tokinashi and Minowase Summer Cross F1), and c) winter radish (Monachijska Biała and Murzynka). A considerable variability in the levels of estimated organic compounds was found between cultivars, harvest dates, and investigation years. In early radish the contents were lowest, and in Murzynka - highest. The amounts of dry weight in radish leaves were greater than in hypocotyl-roots (even double). The trends of changes in dry weight level during root growth of European cultivars were similar in leaves and storage organs. For Japanese radish these tendencies were not comparable. The content of soluble sugar in the hypocotyl-roots of daikon and winter cultivars increased during the first harvests and then fell considerably.

Capecka E., 1996. Changes in the level of some organic compounds during hypocotyl-root growth of radish Raphanus sativus L. cultivars. Folia Horticulturae 8/2: 121-129.