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Preference for and Suitability of Selected Elms, Ulmus spp. and Their Hybrids for the Elm Leaf Beetle, (Pyrrhalta luteola Coleoptera: Chrysomelidae)


3.100285
Digitized
(Item)
6 pages
Article
December 1994
Describes research on the feeding preference of the Elm Leaf Beetle on selected Elm species to select possible candidates for cross-breeding with species resistant to Dutch Elm disease. 
Selected elms Ulmus spp. and their hybrids growing at the Morton Arboretum, Lisle, IL were evaluated in the laboratory for feeding preference by the elm leaf beetle, Pyrrhalta luteola (Muller). Results from the single-choice and multiple-choice feeding studies showed that U. szechuanica was the least suitable for feeding and reproduction by the adult elm leaf beetle. The hybrids U. pumila x U. parvifolia and U. pumila x U. americana, and U. pumila (control) appeared to be highly suitable for feeding and reproduction by the adult elm leaf beetle. Adult longevity and the pre-ovipositional period appeared to be a function of suitability as adults feeding on U. szechuanica had the shortest longevity and the the longest pre-ovipositional period. The converse was also true. Results from multiple-choice studies were consistent with the single-choice studies. The intermediately suitable species/hybrids of U. japonica­wilsoniana x U. pumila, U. japonica, U. macrocarpa, and U. wilsoniana show promise for further elm breeding programs. Further studies are needed to evaluate hybrid crosses of the intermediately and least preferred elms as potential sources of shade trees resistant to Dutch elm disease and not preferred by the elm leaf beetle.
12, 4 , 231-235
Miller, Fredric D. (authored by (2nd))
Journal of Environmental Horticulture (published by)
Publications by George Ware
English
Copyright statement: Copyright restrictions applying to use or reproduction of this image are available from the Sterling Morton Library, The Morton Arboretum. For more information, please visit our ABOUT section or complete and submit this form.