1. 1. An assay of Rhopalosiphum padi, R. maidis and Shizaphis graminum for electromorph variation demonstrates species-specific markers for the Rhopalosiphum species and electrophoresis can be used as a taxonomic tool to study population differentiation. 2. 2. Genetic variability is low in four of five species of aphid, but twice as high in Macrosiphum euphorbiae. The low variation is interpreted as a function of the parthenogenetic mode of reproduction utilized by these species. 3. 3. Although Rhopalosiphum padi demonstrated no genetic differences between host-plant races, M. euphorbiae and Aphis citricola did. The significance of this finding is briefly discussed.
|Original language||English (US)|
|Number of pages||5|
|Journal||Comparative Biochemistry and Physiology -- Part B: Biochemistry and|
|State||Published - 1985|
ASJC Scopus subject areas
- Molecular Biology