title: Allelopathy of the invasive plant Bidens frondosa on the seed germination of Geum japonicum var. chinense.
abstract: Five gradient concentrations (0.02, 0.04, 0.06, 0.08, and 0.10 g/mL) of leaching liquors from the roots, stems, and leaves of the invasive plant Bidens frondosa were used as conditioning fluid to examine its influence on seed germination conditions of the native plant Geum japonicum var. chinense in Huangshan. All leaching liquors of organs suppressed the seed germination of Geum japonicum var. chinense and reduced the final germination percentage and rate, and increased the germination inhibition rate, with a bimodal dependence on concentration. The leaching liquor inhibited the seed germination significantly at the concentration of 0.02 g/mL respectively. The seed germination was also inhibited as the concentration reached to 0.04 g/mL and beyond. Hence the allelopathic effects of the organs were significantly enhanced respectively. This phenomenon represented the presence of allelopathy substances in the root, stem and leaf of Bidens frondosa.
authors.affiliation: School of Life and Environment Science, Huangshan University, Huangshan, China wxf74hs@163.com.
authors.forename: X F
authors.initials: XF
authors.lastname: Wang
authors.affiliation: The Key Laboratory of Forest Genetics and Biotechnology, Nanjing Forestry University, Nanjing, China.
authors.forename: D
authors.initials: D
authors.lastname: Hassani
authors.affiliation: School of Life and Environment Science, Huangshan University, Huangshan, China.
authors.forename: Z W
authors.initials: ZW
authors.lastname: Cheng
authors.affiliation: Landscape Bureau of Huangshan Scenic Spots, Anhui, China.
authors.forename: C Y
authors.initials: CY
authors.lastname: Wang
authors.affiliation: Landscape Bureau of Huangshan Scenic Spots, Anhui, China.
authors.forename: J
authors.initials: J
authors.lastname: Wu
mesh_terms: D064089:Allelopathy / Q000187:drug effects*; D031176:Bidens / Q000737:chemistry; D018525:Germination / Q000187:drug effects*; D031986:Geum / Q000187:drug effects* / Q000254:growth & development; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D036226:Seedlings / Q000187:drug effects
chemical_list: D010936:Plant Extracts