Extraction, Chromatography, and Bioassay of Obscure Root Weevil (Sciopithes obscurus) Phagostimulants from Rhododendron ‘Cynthia’ 12
- 1 April 1980
- journal article
- research article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 9 (2) , 155-158
- https://doi.org/10.1093/ee/9.2.155
Abstract
Obscure root weevil (Sciopithes obscurus Horn) feeding stimulants can be obtained from leaf tissue of the Rhododendron cv. Cynthia (R. catawbiense Michaux × R. griffithianum Wight). Exhaustive ethanolic extraction, followed by solvent partitioning against hexanes and thin-layer chromatography of the ethanolic and hexanes fractions, yields three components with phagostimulatory activity in a membrane filter insect feeding bioassay. Sucrose, one of the obscure root weevil feeding stimulants present in the leaves of ‘Cynthia’, is more potent in the insect feeding bioassay than several other simple carbohydrates.This publication has 3 references indexed in Scilit:
- A Membrane Filter Bioassay for Studying Phagostimulatory Materials in Leaf Extracts1Annals of the Entomological Society of America, 1979
- Resistance Among Rhododendron Species to Obscure Root Weevil Feeding123Journal of Economic Entomology, 1978
- Chemosensory Bases of Host Plant SelectionAnnual Review of Entomology, 1968