ABSTRACT Plant stress studies are based on gene expressions. This research aims to analyze the DNA sequence of 18S rRNA in cocor bebek (K. x laetivirens). The research methods being out are total DNA isolation, electrophoresis, PCR, sequencing and data analysis utilizing BioEdit, BLASTn and Mega 6 programs. Partial DNA sequence of 18S rRNA in K. x laetivirens has been obtaine with 419 bp lengt…