1Key Laboratory of Integrated Management of Crop Disease and Pests (Nanjing Agricultural Universisty), Nanjing, Jiangsu, PR China, 210095
College of Plant Protection, Jiangsu Key Laboratory of Pesticide Science, Nanjing Agricultural University, Nanjing, Jiangsu, PR China, 210095
*Correspondence author, E. Mail: dly@njau.edu.cn
Online published on 1 October, 2011.
Solidago canadensis is a destructive invasive weed in China. It has vanished the local plants species due to its allelopathic effects, which may be used for weed control. The ethanol extract from S. canadensis was isolated and identified by silica gel column chromatography, high performance liquid chromatography, gas chromatography-mass spectrometry and 1H-nuclear magnetic resonance. A flavonoid, kaempferol-3-O-β-D-glucoside, was isolated from the ethyl acetate extract. This flavonoid inhibited the shoot growth of Echinochloa colonum at 15 μg/mL concentration and the inhibition increased with its increasing concentrations. This flavonoid might be the potential allelochemical in S. canadensis with future use in weeds control.
Allelochemicals, Canada goldenrod, Echinochloa colonum L, kaempferol-3-O-β-D-glucoside, radicle, Response index, shoot, Solidago canadensis
