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Insect allelochemic effects of sesquiterpene lactones from Melampodium |
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| Authors: | C. M. Smith K. M. Kester N. H. Fischer |
| Affiliation: | a Department of Entomology and Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Louisiana State University, Baton Rouge, LA 70803, U.S.A. b Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, U.S.A. |
| Abstract: | The crude syrups of Melampodium americanum L. and Melampodium leucanthum Torr. and Gray and their principal sesquiterpene lactones, melampodin A and melampodinin A, significantly inhibit growth and deter feeding of the fall armyworm, Spodoptera frugiperda (J. E. Smith). Melampodin A and melampodinin A caused 2.3 × and 5.5 × greater S. frugiperda larval mortality, respectively, than glaucolide A, a sesquiterpene lactone with previously demonstrated insect allelochemic effects. |
| Keywords: | Spodoptera frugiperda fall armyworm Lepidoptera Melampodium Compositae allelochemics sesquiterpene lactones |
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