Isolation, identification, and characterization of compounds from acer rubrum capable of oxidizing equine erythrocytes.

Objective: To identify compounds in Acer rubrum that cause hemolysis or oxidation of equine erythrocytes and determine whether these toxins are found in other Acer spp.

Sample Population: Equine erythrocytes.

Procedure: Washed erythrocytes were incubated with extracts and fractions of Acer spp that were separated by thin layer chromatography.

Genetic control and evolution of sesquiterpene biosynthesis in Lycopersicon esculentum and L. hirsutum.

Segregation analysis between Lysopersicon esculentum (cultivated tomato) and L. hirsutum (wild form) in conjunction with positional verification by using near-isogenic lines demonstrated that biosynthesis of two structurally different classes of sesquiterpenes in these species is controlled by loci on two different chromosomes. A locus on chromosome 6, Sesquiterpene synthase1 (Sst1), was identified for which the L.

Identification and bioassay of kairomones forHelicoverpa zea.

Hexane extracts of leaves of 307 accessions from 73 host plant species ofHelicoverpa zea were analyzed by gas chromatography (GC) and used forH. zea oviposition and neonate larvae orientation bioassays. The gas chromatographic (GC) retention times of compounds statistically associated with behavioral activity were identified by correlation of GC peak area with oviposition and larval orientation preferences.