title: Activity of extracts from nonhost legumes on the germination of Striga hermonthica seeds.
abstract: Dichloromethane and water extracts from leaves, stems and roots of ten different legume cultivars were assayed for germination stimulation of moisture and temperature conditioned Striga hermonthica (Del.) Benth. seeds. Optimum concentrations for most active extracts were in the undiluted or dilution × 10 range. Unlike water extracts, all dichloromethane extracts induced some stimulatory activities at the various concentrations. A potentially high stimulant producing cultivar, V. unguiculata cv. it-84d-975 was identified. The nondestructive thin-layer chromatography (TLC) technique was employed in investigating the dichloromethane-soluble substances in legume cultivars. TLC data indicated that most legume species and cultivars produce four chromatographically different germination stimulants with retention factors of 0.10, 0.60, 0.70 and 0.77.
authors.affiliation: Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana, U.S.A.
authors.forename: J K
authors.initials: JK
authors.lastname: Rugutt
authors.forename: D K
authors.initials: DK
authors.lastname: Berner