allelopathic. Aqueous or methanol extracts and residues from leaves of lettuce cultivar
“Cheongchima”, which showed the most inhibitory effects, were assayed to determine their
allelopathic effects on seed germination and early seedling growth of several plant species.
The aqueous extracts applied to filter paper significantly inhibited seed germination of alfalfa
with increasing of extract concentration. Methanol extracts from hexane fraction of lettuce …