CORRELATION BETWEEN LEVEL OF PHENYLPROPANOIDS IN COTYLEDONS AND FLOWERING IN PHARBITIS SEEDLINGS UNDER HIGH-FLUENCE ILLUMINATION

Strain Violet of Pharbitis nil flowers under continuous light when exp osed to fluence rate greater than 30 W m(-2) (15,000 lux) for 12 days or longer, but strain Kidachi does not flower. A high fluence rate pro moted the accumulation of chlorogenic acid (CGA), pinoresinol-beta-glu coside (PRG) and p-coumaroylquinic acid (COQ) in strain Violet, while in strain Kidachi the level of these compounds did not increase even u nder the highest fluence rate tested. The level of CGA, PRG and COQ in the cotyledons of strain Violet increased in pararell with induction of flowering under high-fluence illumination. Aminooxyacetic acid (AOA ) inhibited flowering simulutaneously suppressing the accumulation of CGA and PRG.