title: Feeding deterrency of some 4-hydroxycoumarins and related compounds: Relationship to host-plant resistance of alfalfa towards pea aphid (Acyrthosiphon pisum).
abstract: A series of 3-acyl-4-hydroxycoumarins, structurally related to dicoumarol, as well as several alfalfa constituents including coumestrol were tested for their feeding deterrency towards the pea aphid. Feeding deterrency of the 3-acyl-4-hydroxycoumarins decreased as the size of the 3-acyl group increased.
authors.affiliation: U.S. Department of Agriculture, 800 Buchanan St., Albany, California.
authors.forename: D L
authors.initials: DL
authors.lastname: Dreyer
authors.forename: K C
authors.initials: KC
authors.lastname: Jones
authors.forename: L
authors.initials: L
authors.lastname: Jurd
authors.forename: B C
authors.initials: BC
authors.lastname: Campbell