title: Devil's-claw (Proboscidea louisianica), essential oil and its components : Potential allelochemical agents on cotton and wheat.
abstract: The potential allelopathic activity of devil's-claw [Proboscidea louisianica (Mill.) Thellung] essential oil and a few of the compounds it contains on the elongation of cotton (Gossypium hirsutum L.) and wheat (Triticum aestivum L.) radicles was studied using a Petri dish bioassay. Essential oil was collected by steam distillation using an all-glass-Teflon assembly. Ether extracts of the steam distillates from fresh devil's-claw were inhibitory to cotton and wheat radicle elongation. The following six components of devil's-claw essential oil identified by CGC-MS-DS were inhibitory to cotton and/or wheat at a concentration of 1 mM: vanillin, piperitenone, δ-cadinene,p-cymen-9-ol, α-bisabolol, and phenethyl alcohol.
authors.affiliation: Department of Agronomy, Oklahoma State University, 74078, Stillwater, Oklahoma.
authors.forename: M S
authors.initials: MS
authors.lastname: Riffle
authors.forename: G R
authors.initials: GR
authors.lastname: Waller
authors.forename: D S
authors.initials: DS
authors.lastname: Murray
authors.forename: R P
authors.initials: RP
authors.lastname: Sgaramello