PCR product electrophoresis The amplified PCR products of Aromarker, FMbadh2- E2B, 3In2AP and Waxy (CT)n were loaded onto 4.5% polyacrylamide gels and separated by electrophoresis in 1 × TBE buffer at 50 ºC and 60 W. The PCR products were visualized using silver standing. The amplified PCR markers Waxy (G-T), SNP2209 and SNP2340-41 were loaded onto 1.5% agarose gels and separated by electrophoresis in 0.5 × TBE buffer at 90 V for 60 min. The PCR products were visualized using ethidium bromide staining. Polymorphisms in the DNA profiles were scored using visual comparisons with standard controls and standard DNA gene ladder.