... 17,39%, PVY: 100%, PLRV: 100% - Phƣờng 9: PVX: 21,21%, PVY: 96,97%, PLRV: 96,97% - Phƣờng 1 1: PVX: 41 ,18%, PVY: 100%, PLRV: 100% - Phƣờng 1 2: PVX: 72,73%, PVY:100 %, PLRV: 100% 2. Phát hiện ... hóa chất sau : - Polyvinylpyrolidone - 40 (PVP) 2% - Tris-base - β-mercaptoethanol 14, 2 M - Ethanol 95 - 100% - NaOH 0,1 M - EDTA 1M 3.2.2.2 Vật liệu dùng trong phản ứng RT -PCR *Giai đoạn ... virus - p-NPP: p - nitrophenol phosphate - PVP: Polyvinylpyrrolidone - RNA: Ribonucleic acid - RT -PCR: Reverse transcriptase – Polymerase chain reaction - PVX: Potato virus X - PVY: Potato...