Abstract
The total phenolic content of foliage from 11 elm species and 2 cultivars was measured, and the relationship to gypsy moth developmental studies was determined. The 13 elms, Ulmus wilsoniana (Schneid.), U. japonica (Rehd.), U. glaucesens (Franch), ‘Accolade’, ‘Triumph’, U. davidiana (Planch), U. parvifolia (Jacq.), U. szechuanica (Fang), U. macrocarpa (Hance), U. chenmoui (Cheng), U. lamellosa (C. Wang et S.L. Chang, ex L.K. Fu), U. castaneifolia (Hemsl.), and U. gaussenii (Cheng), were grown at the Morton Arboretum, Lisle, IL and analyzed at the Pesticide Toxicology Laboratory, Iowa State University, Ames, IA. Significant differences were found in the phenolic content of the 13 elms surveyed. No significant differences were identified between gypsy moth larval longevity, pupal fresh weight, or percentage adult emergence with respect to total leaf phenolic content.
Author notes
Financial support for this research was provided by the Tree Research and Education Endowment Fund, Champaign, IL, and the Morton Arboretum, Lisle, IL. Portions of this study were also supported by a J. Frank Schmidt Charitable Foundation Grant and The Horticulture Research Institute, 1000 Vermont Ave., NW, Suite 300, Washington DC 20005.
2Graduate Student, Department of Entomology, Iowa State University, Ames, IA 50011. [email protected]
3Professor of Horticulture, Joliet Junior College, 1215 Houbolt Road, Joliet, IL, 60431. [email protected]
4Research Entomologist, Department of Entomology, Iowa State University, Ames, Iowa, 50011. [email protected]
5Professor of Entomology and Toxicology, Department of Entomology, Iowa State University, Ames, Iowa, 50011. [email protected]