n African Entomology - Genetic diversity of potato aphid, , populations in Tunisia detected by RAPD




In this study, the genetic structure of 15 populations of the potato aphid, Thomas (Hemiptera: Aphididae), from Tunisia was characterized using RAPD markers. Five decameric random primers revealed 113 polymorphic loci that were used to estimate population structure with an average of 22.6 polymorphic bands per primer. Analysis of molecular variance (AMOVA) showed significant (P < 0.001) genetic diversity among populations (78.16 %) rather than within populations (21.84 %) that has been confirmed by and values. A cluster analysis based on genetic distance revealed that the 15 populations were divided into three groups. Populations from the south were differentiated into one group irrespective of host plant, whereas the other populations were distributed between two groups independently of the geographic origin and host plant. These results represent the first evidence for genetic structuring in


Article metrics loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error