| changes in genotypic composition of myzus persicae (hemiptera: aphididae) on tobacco during the past two decades in japan. | ninety-nine and 476 clones of myzus persicae (sulzer) were sampled on tobacco at kyoto (shimogamo) (1996-2000) and at 23 other localities (1998-1999) in japan, respectively. the clones were classified into colour-esterase forms, distinguished by combinations of body colour and electrophoretically detectable esterases, to verify the changes in genotypic composition during the past two decades. fifteen and 31 colour-esterase forms were found at kyoto (shimogamo) and at 23 other localities, respect ... | 2003 | 14704100 |