APPLICATION OF RAPD IN GENETIC DIVERSITY STUDY ON GRACILARIA LEMANEIFORMIS Ⅲ.PHASE AND SEX RELATED MARKERS

Random amplification of polymorphic DNA (RAPD) was conducted by using 10 ran-dom primers (P-1 to P-10) in Gracilaria lemaneiformis. Phase and sex specific bands were amplified byprimers P-2, P-6, P-7 and P-8: for P-2 a 1 .4 kb band was found in female gametophytes and tetrasporo-phytes, for P-6, a 0.6 kb band appeared in male gametophytes and tetrasporophytes; for P-7, a 0. 76 kbband appeared in male gametophytes and tetrasporophytes; for P-7, a 0.72 kb band appeared in femalegametophytes and tetrasporophytes; for P-8, a 0. 73 kb band only appeared in male gametophytes.