Screening of the Growth-Inhibitory Effects of 168 Plant Species against Lettuce Seedlings
2013
The methanol extracts of 168 plant species from 68 families
were evaluated for their inhibitory activity against lettuce seedling
elongation. Among the plant species tested, 12 species had EC50 values
for radicle growth inhibition ranging from 0.01 to 5.00 mg fresh weight
equivalent mL-1. Enterolobium
contortisiliquum, a traditionally used herbal medicine, exhibited the
strongest inhibitory activity (estimated EC50: 0.28 fresh weight
equivalent mL-1). Among the 12 species, Pachysandra terminalis, Tamarindus
indica, and Albizia guachapele required investigation, because only little has been reported about their
chemical constituents to date. The data in the present study would be useful in
finding new lead compounds for natural herbicides.
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