Authors : B. K. Avchar
Page Nos : 107-111
The allelopathic effects of 4-relatively abundant volatile compounds (Phenolic meroterpene, bakuchiol, limonene and terpineol) present in the Cullen corylifolia Medik. (Psoralea corylifolia Linn. plant placed in the air tight jars containing soil and water were studied on the seed germination, seedling growth of Cucumis sativus L. The inhibitory effects of volatile compounds released in water have more inhibitory effects on seed germination and seedling growth of studied plant. These volatile compounds at high concentrations inhibited the seed germination, shoot length, seedling height but low concentrations were less inhibitory or stimulatory. All these volatile compounds at low concentrations were slightly stimulatory to seedling of Cucumis plant. Water kept with plant material of Cullen in airtight jar affects seed germination and seedling growth significantly than soil which indicates that water absorbs some volatile substance(s) more from the weed plant which may be responsible for allelopathic potential of this weed plant. The plant is chemically analyzed for the presence and confirmation of stearic acid by HPTLC method. However, the presence of this chemical compound in the plant parts of Cullen corylifolia Medik. was well correlated with the degree of their phytotoxicity.