title: [Chemical composition of volatile oil from Chromolaena odorata and its effect on plant, fungi and insect growth].
abstract: The volatile oil from C. odorata had a significant effect on the growth of plants, fungi and insects. The result showed that the seedling growth of five test plants was obviously inhibited, in the order of ryegrass > Chinese cabbage > radish > snap been > rice. The inhibitory effect of the oil at its middle concentration (800 mg.L-1) for Pyricularia grisea was the strongest, the next was to Phytophthora nicotianae, and the weakest was to Fusarium axysporum. The inhibitory percentage was 61.40%, 29.27% and 14.44%, respectively. The volatile oil from C. odorata at the dose of 10-20 microliters.plant-1 had a significant oviposition deterrent effect on Phyllotreta striolata and Plutella xylostella. The volatile oil from C. odorata was analyzed by GC/MS and thirty components were identified. Terpenoids compounds were major components of the volatile oil, such as trans-caryophyllene (16.58%), delta-cadinene (15.85%), alpha-copaene (11.58%), caryophyllene oxide (9.63%), germacrene-D (4.96%), and delta-humulene (4.32%).
authors.affiliation: Laboratory of Insect Ecology, South China Agricultural University, Guangzhou 510642, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Ling
authors.forename: Maoxin
authors.initials: M
authors.lastname: Zhang
authors.forename: Chuihua
authors.initials: C
authors.lastname: Kong
authors.forename: Xiongfei
authors.initials: X
authors.lastname: Pang
authors.forename: Guangwen
authors.initials: G
authors.lastname: Liang
mesh_terms: D000818:Animals; D036604:Chromolaena / Q000737:chemistry*; D005658:Fungi / Q000187:drug effects*; D008401:Gas Chromatography-Mass Spectrometry; D007313:Insecta / Q000254:growth & development*; D009822:Oils, Volatile / Q000737:chemistry / Q000494:pharmacology*; D063245:Plant Development; D010944:Plants / Q000187:drug effects*
chemical_list: D009822:Oils, Volatile