“…They require only a small fraction of a single aphid homogenate allowing tests to be run in conjunction with other assays. Allelic discrimination using quantitative real-time PCR has been successfully used in a number of systems (Monk et al, 2002;McGuigan and Ralston, 2002;Sevall, 2001;Glaab and Skopek, 1999;Abbaszadegan et al, 1997). The methods previously used for determining kdr and super-kdr genotypes in M. persicae, PCR amplification of specific alleles (PASA) (Guillemaud et al, 2003), single-strand conformation polymorphism (SSCP) and sequencing, are not high throughput and require postamplification manipulations which increase the time and labour required.…”