Abstract
Both root and hypocotyl growths of lettuce, tomato, red cabbage and cucumber were inhibited when the seedlings were grown in Petri dishes together with 1 to 6 fruits ofWashingtonia filifera. This inhibition, in the case of lettuce hypocotyl, was not reversed completely even after the addition of 50 mg lt-1 GAs. Effect ofW. filifera fruits on the light-induced synthesis of anthocyanin in red cabbage seedlings revealed that the presence of one fruit was enough to reduce the production of anthocyanin three times less than that of control. Water-soluble extract of the fruits when subjected to high temperature increased its growth inhibiting ability several times that of the untreated control.
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