CHLOROPLAST DNA VARIATION AND PHYLOGENETIC RELATIONSHIP AMONG SECALE SPECIES Restriction Endonuclease Digestion of Amplification Products Generated by RAPD Technique in a Population of Glycine soja THE RESTRICTION ENDONUCLEASE ELECTROPHORESIS OF A DNA STRAIN OF PIERIS RAPAE GRANULOSIS VIRUS COMPARATIVE STUDY ON MITOCHONDRIAL DNA FROM CYTOPLASMIC MALE STERILE LINES OF HONGLIAN TYPE AND YIEBAI TYPE RICE RESTRICTION ENDONUCLEASE ANALYSIS OF HYPHANTRIA CUNEA NPV ANALYSIS OF RESTRICTION ENZYMES OF CHLOROPLAST DNA IN TOMATO VARIETIES WHICH HAVE DIFFEERENT RESISTANCE TO TOBBACCO MOSSIC VIRUS