Abstract
Abstract The effect of increased ascorbate (ASC) content on the development of Brassica rapa plants grown either under short-day or long-day conditions was investigated. Treatment with the ASC precursor l-galactono-γ-lactone (GalL) delayed growth and flowering in long-day-grown plants, but induced growth and early flowering in short-day grown plants. Activities of the enzymes of the ASC system showed remarkable differences in plants grown under different light regimes. No difference in growth and flowering time in response to GalL treatment was observed in a dwarf mutant impaired in gibberellin synthesis.
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