This course is aimed at enhancing students’ knowledge in the principles of molecular techniques applied in plant cultivar identification, viral disease diagnosis, and GMO (genetically modified organism) product detection. The techniques covered include DNA purification and gel electrophoresis, protein extraction and SDS-PAGE analysis, plant virus ELISA and RT-PCR diagnosis, microarray detection, and molecular marker (RAPD, ISSR, AFLP, and RFLP) application.