that water soluble leaf exudates of Dittrichia viscose suppressed root
length, lateral root development, cell division and the formation of
root hairs in lettuce.
3.4. Identified substances in aqueous extracts and volatiles
The observed allelopathic effects of the T. tuberculata Beumee suggested
that the stemand leaf contain phytotoxic compounds. Identification
of the inhibitor components is important to explore new herbicide
based on chemical compounds that can be extracted fromT. tuberculata
tissues. Moreover, it can be useful to determine the phytotoxic interference
mechanism on receiver plants. GC–MS analyses of the different
plant parts (stem and leaf) of T. tuberculata revealed the presence of