title: [Allelopathic potential of volatile oil from Mikania micrantha].
abstract: Mikania micrantha, an exotic plant species, is an important weed in south China. The volatile oil of the weed species had significant biological activities on plants and their pathogens, particularly Pyricularia grisea. The results showed that the seeding growth of 6 plant species decreased obviously when exposed to increasing concentration (200, 400, 800, 1600 mg.L-1) of the volatile oil. The fresh weight of all test plants decreased, and the emergence of all test plants delayed for 1-2 days under soil treatment (2500 g.hm-2). The inhibitory effect of volatile oil of M. micrantha at its medium concentration was the most strong on Pyricularia grisea; secondary on Fusarium oxysporum; but weak on Phytophthora nicotianae. The inhibitory rate was 53.38%, 28.66% and 18.69% for the three plant pathogens, respectively.
authors.affiliation: Laboratory of Insect Ecology, South China Agricultural University, Guangzhou 510642. mxzhang@scau.edu.cn
authors.forename: Maoxin
authors.initials: M
authors.lastname: Zhang
authors.forename: Bing
authors.initials: B
authors.lastname: Ling
authors.forename: Chuihua
authors.initials: C
authors.lastname: Kong
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
authors.forename: Xiongfei
authors.initials: X
authors.lastname: Pang
mesh_terms: D001203:Ascomycota / Q000187:drug effects; D005670:Fusarium / Q000187:drug effects*; D035742:Mikania / Q000737:chemistry*; D009822:Oils, Volatile / Q000494:pharmacology*; D010838:Phytophthora / Q000187:drug effects*; D036226:Seedlings / Q000187:drug effects*
chemical_list: D009822:Oils, Volatile